--- DOAJ_listed: '1' OA_place: publisher OA_type: gold PlanS_conform: '1' _id: '20840' abstract: - lang: eng text: Probing the possibility of entanglement generation through gravity offers a path to tackle the question of whether gravitational fields possess a quantum mechanical nature. A potential realization necessitates systems with low-frequency dynamics at an optimal mass scale, for which the microgram-to-milligram range is a strong contender. Here, after refining a figure-of-merit for the problem, we present a 1-milligram torsional pendulum operating at 18 Hz. We demonstrate laser cooling its motion from room temperature to 240 microkelvins, surpassing by over 20-fold the coldest motions attained for oscillators ranging from micrograms to kilograms. We quantify and contrast the utility of the current approach with other platforms. The achieved performance and large improvement potential highlight milligram-scale torsional pendulums as a powerful platform for precision measurements relevant to future studies at the quantum-gravity interface. acknowledgement: We thank Gerard Higgins, Andrei Militaru, Nikolai Kiesel, and Markus Aspelmeyer for useful discussions on the topic of the figure-of-merit. We thank Teodor Strömberg for helping with the additional characterizations of the optical lever noise. We thank Johannes Fink and Scott Waitukaitis for their helpful feedback on the manuscript. This work was supported by Institute of Science and Technology Austria and the European Research Council under Grant No. 101087907 (ERC CoG QuHAMP). article_number: '80' article_processing_charge: Yes article_type: original arxiv: 1 author: - first_name: Sofya full_name: Agafonova, Sofya id: 09501ff6-dca7-11ea-a8ae-b3e0b9166e80 last_name: Agafonova orcid: 0000-0003-0582-2946 - first_name: Pere full_name: Rosello, Pere last_name: Rosello - first_name: Manuel full_name: Mekonnen, Manuel last_name: Mekonnen - first_name: Onur full_name: Hosten, Onur id: 4C02D85E-F248-11E8-B48F-1D18A9856A87 last_name: Hosten orcid: 0000-0002-2031-204X citation: ama: Agafonova S, Rosello P, Mekonnen M, Hosten O. One-milligram torsional pendulum toward experiments at the quantum-gravity interface. Communications Physics. 2026;9. doi:10.1038/s42005-026-02514-w apa: Agafonova, S., Rosello, P., Mekonnen, M., & Hosten, O. (2026). One-milligram torsional pendulum toward experiments at the quantum-gravity interface. Communications Physics. Springer Nature. https://doi.org/10.1038/s42005-026-02514-w chicago: Agafonova, Sofia, Pere Rosello, Manuel Mekonnen, and Onur Hosten. “One-Milligram Torsional Pendulum toward Experiments at the Quantum-Gravity Interface.” Communications Physics. Springer Nature, 2026. https://doi.org/10.1038/s42005-026-02514-w. ieee: S. Agafonova, P. Rosello, M. Mekonnen, and O. Hosten, “One-milligram torsional pendulum toward experiments at the quantum-gravity interface,” Communications Physics, vol. 9. Springer Nature, 2026. ista: Agafonova S, Rosello P, Mekonnen M, Hosten O. 2026. One-milligram torsional pendulum toward experiments at the quantum-gravity interface. Communications Physics. 9, 80. mla: Agafonova, Sofia, et al. “One-Milligram Torsional Pendulum toward Experiments at the Quantum-Gravity Interface.” Communications Physics, vol. 9, 80, Springer Nature, 2026, doi:10.1038/s42005-026-02514-w. short: S. Agafonova, P. Rosello, M. Mekonnen, O. Hosten, Communications Physics 9 (2026). corr_author: '1' date_created: 2025-12-21T11:39:04Z date_published: 2026-03-04T00:00:00Z date_updated: 2026-03-16T10:09:22Z day: '04' ddc: - '530' department: - _id: GradSch - _id: OnHo doi: 10.1038/s42005-026-02514-w external_id: arxiv: - '2408.09445' file: - access_level: open_access checksum: 62e2175e7e3ad49260ae6a7b4e0860a2 content_type: application/pdf creator: dernst date_created: 2026-03-16T10:07:46Z date_updated: 2026-03-16T10:07:46Z file_id: '21457' file_name: 2026_CommunicationsPhysics_Agafonova.pdf file_size: 1901772 relation: main_file success: 1 file_date_updated: 2026-03-16T10:07:46Z has_accepted_license: '1' intvolume: ' 9' language: - iso: eng month: '03' oa: 1 oa_version: Published Version project: - _id: bdb2a702-d553-11ed-ba76-f12e3e5a3bc6 grant_number: '101087907' name: 'A quantum hybrid of atoms and milligram-scale pendulums: towards gravitational quantum mechanics' publication: Communications Physics publication_identifier: eissn: - 2399-3650 publication_status: published publisher: Springer Nature quality_controlled: '1' related_material: record: - id: '20842' relation: research_data status: public scopus_import: '1' status: public title: One-milligram torsional pendulum toward experiments at the quantum-gravity interface tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 9 year: '2026' ... --- OA_place: publisher OA_type: hybrid PlanS_conform: '1' _id: '20797' abstract: - lang: eng text: Quantum key distribution (QKD) offers a theoretically secure method to share secret keys, yet practical implementations face challenges due to noise and loss over long-distance channels. Traditional QKD protocols require extensive noise compensation, hindering their industrial scalability and lowering the achievable key rates. Alternative protocols encode logical qubits in noise-resilient states but at the cost of using many physical qubits, increasing susceptibility to loss and limiting transmission distance. In this work, we introduce a logical-qubit encoding that uses antisymmetric Bell states in the continuous photonic degrees of freedom, frequency and time. By leveraging the continuous space, we overcome this noise-loss robustness trade-off by minimizing the number of photons per logical qubit while optimizing the encoding resilience over noise fluctuations. We analyze the security of our encoding and demonstrate its robustness compared to existing state-of-the-art protocols. This approach provides a path toward scalable, efficient QKD implementations under realistic noise conditions. acknowledgement: We thank B. Baragiola, A. Boubriak, M. Clark, M. Jones, and P. Skrzypczyk for useful discussions. H.S. acknowledges financial support from EPSRC Quantum Engineering Centre for Doctoral Training Grant No. EP/SO23607/1. E.L. acknowledges support from the Engineering and Physical Sciences Research Council (EPSRC) Hub in Quantum Computing and Simulation (EP/T001062/1). T.S. acknowledges that they received no funding in support of this research. M.P.S. acknowledges support from the EPSRC Quantum Engineering Centre for Doctoral Training EP/SO23607/1 and the European Commission through Starting Grant No. ERC-2018-STG803665 (PEQEM). G.R. acknowledges support from the Royal Commission for the Exhibition of 1851 through a Research Fellowship, from the European Commission through Starting Grant No. ERC-2018-STG803665 (PEQEM) and Advanced Grant No. ERC-2020-ADG101021085 (FLQuant), and from EPSRC through Standard Proposal Grant No. EP/X016218/1 (Mono-Squeeze). article_number: '024072' article_processing_charge: Yes (in subscription journal) article_type: original arxiv: 1 author: - first_name: Hannah full_name: Seabrook, Hannah last_name: Seabrook - first_name: Emilien full_name: Lavie, Emilien last_name: Lavie - first_name: Karl T full_name: Strömberg, Karl T id: 68011cd2-da32-11ee-a930-b2774c7aba5f last_name: Strömberg - first_name: Matthew P. full_name: Stafford, Matthew P. last_name: Stafford - first_name: Giulia full_name: Rubino, Giulia last_name: Rubino citation: ama: Seabrook H, Lavie E, Strömberg KT, Stafford MP, Rubino G. Surpassing the loss-noise robustness trade-off in quantum key distribution. Physical Review Applied. 2025;24(2). doi:10.1103/xq2l-r4r7 apa: Seabrook, H., Lavie, E., Strömberg, K. T., Stafford, M. P., & Rubino, G. (2025). Surpassing the loss-noise robustness trade-off in quantum key distribution. Physical Review Applied. American Physical Society. https://doi.org/10.1103/xq2l-r4r7 chicago: Seabrook, Hannah, Emilien Lavie, Karl T Strömberg, Matthew P. Stafford, and Giulia Rubino. “Surpassing the Loss-Noise Robustness Trade-off in Quantum Key Distribution.” Physical Review Applied. American Physical Society, 2025. https://doi.org/10.1103/xq2l-r4r7. ieee: H. Seabrook, E. Lavie, K. T. Strömberg, M. P. Stafford, and G. Rubino, “Surpassing the loss-noise robustness trade-off in quantum key distribution,” Physical Review Applied, vol. 24, no. 2. American Physical Society, 2025. ista: Seabrook H, Lavie E, Strömberg KT, Stafford MP, Rubino G. 2025. Surpassing the loss-noise robustness trade-off in quantum key distribution. Physical Review Applied. 24(2), 024072. mla: Seabrook, Hannah, et al. “Surpassing the Loss-Noise Robustness Trade-off in Quantum Key Distribution.” Physical Review Applied, vol. 24, no. 2, 024072, American Physical Society, 2025, doi:10.1103/xq2l-r4r7. short: H. Seabrook, E. Lavie, K.T. Strömberg, M.P. Stafford, G. Rubino, Physical Review Applied 24 (2025). date_created: 2025-12-11T10:46:28Z date_published: 2025-08-29T00:00:00Z date_updated: 2025-12-15T09:40:58Z day: '29' ddc: - '530' department: - _id: OnHo doi: 10.1103/xq2l-r4r7 external_id: arxiv: - '2412.08694' file: - access_level: open_access checksum: 12ddb0414780f65b8e690fe0e6cfb95e content_type: application/pdf creator: dernst date_created: 2025-12-15T09:39:12Z date_updated: 2025-12-15T09:39:12Z file_id: '20824' file_name: 2025_PhysReviewApplied_Seabrook.pdf file_size: 3028735 relation: main_file success: 1 file_date_updated: 2025-12-15T09:39:12Z has_accepted_license: '1' intvolume: ' 24' issue: '2' language: - iso: eng month: '08' oa: 1 oa_version: Published Version publication: Physical Review Applied publication_identifier: eissn: - 2331-7019 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Surpassing the loss-noise robustness trade-off in quantum key distribution tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 24 year: '2025' ... --- DOAJ_listed: '1' OA_place: publisher OA_type: gold _id: '19636' abstract: - lang: eng text: This summary of the second Terrestrial Very-Long-Baseline Atom Interferometry (TVLBAI) Workshop provides a comprehensive overview of our meeting held in London in April 2024 (Second Terrestrial Very-Long-Baseline Atom Interferometry Workshop, Imperial College, April 2024), building on the initial discussions during the inaugural workshop held at CERN in March 2023 (First Terrestrial Very-Long-Baseline Atom Interferometry Workshop, CERN, March 2023). Like the summary of the first workshop (Abend et al. in AVS Quantum Sci. 6:024701, 2024), this document records a critical milestone for the international atom interferometry community. It documents our concerted efforts to evaluate progress, address emerging challenges, and refine strategic directions for future large-scale atom interferometry projects. Our commitment to collaboration is manifested by the integration of diverse expertise and the coordination of international resources, all aimed at advancing the frontiers of atom interferometry physics and technology, as set out in a Memorandum of Understanding signed by over 50 institutions (Memorandum of Understanding for the Terrestrial Very Long Baseline Atom Interferometer Study). acknowledgement: "We acknowledge the support of the CERN Physics Beyond Collider activity, the CERN Quantum Technology Initiative, the Long Range Broad Agency Announcement (BAA) for the Navy and Marine Corps Science and Technology programme, Hannover Leibniz University, and the Physics Department at Imperial College London, whose contributions were instrumental in supporting the workshop that laid the foundation for this paper.\r\nThe workshop was partially funded by contributions from the Long Range Broad Agency Announcement (BAA) for the Navy and Marine Corps Science and Technology programme, Hannover Leibniz University, and the Physics Department at Imperial College London." article_number: '42' article_processing_charge: Yes article_type: review arxiv: 1 author: - first_name: Adam full_name: Abdalla, Adam last_name: Abdalla - first_name: Mahiro full_name: Abe, Mahiro last_name: Abe - first_name: Sven full_name: Abend, Sven last_name: Abend - first_name: Mouine full_name: Abidi, Mouine last_name: Abidi - first_name: Monika full_name: Aidelsburger, Monika last_name: Aidelsburger - first_name: Ashkan full_name: Alibabaei, Ashkan last_name: Alibabaei - first_name: Baptiste full_name: Allard, Baptiste last_name: Allard - first_name: John full_name: Antoniadis, John last_name: Antoniadis - first_name: Gianluigi full_name: Arduini, Gianluigi last_name: Arduini - first_name: Nadja full_name: Augst, Nadja last_name: Augst - first_name: Philippos full_name: Balamatsias, Philippos last_name: Balamatsias - first_name: Antun full_name: Balaž, Antun last_name: Balaž - first_name: Hannah full_name: Banks, Hannah last_name: Banks - first_name: Rachel L. full_name: Barcklay, Rachel L. last_name: Barcklay - first_name: Michele full_name: Barone, Michele last_name: Barone - first_name: Michele full_name: Barsanti, Michele last_name: Barsanti - first_name: Mark G. full_name: Bason, Mark G. last_name: Bason - first_name: Angelo full_name: Bassi, Angelo last_name: Bassi - first_name: Jean Baptiste full_name: Bayle, Jean Baptiste last_name: Bayle - first_name: Charles F.A. full_name: Baynham, Charles F.A. last_name: Baynham - first_name: Quentin full_name: Beaufils, Quentin last_name: Beaufils - first_name: Sélyan full_name: Beldjoudi, Sélyan last_name: Beldjoudi - first_name: Aleksandar full_name: Belić, Aleksandar last_name: Belić - first_name: Shayne full_name: Bennetts, Shayne last_name: Bennetts - first_name: Jose full_name: Bernabeu, Jose last_name: Bernabeu - first_name: Andrea full_name: Bertoldi, Andrea last_name: Bertoldi - first_name: Clara full_name: Bigard, Clara last_name: Bigard - first_name: N. P. full_name: Bigelow, N. P. last_name: Bigelow - first_name: Robert full_name: Bingham, Robert last_name: Bingham - first_name: Diego full_name: Blas, Diego last_name: Blas - first_name: Alexey full_name: Bobrick, Alexey last_name: Bobrick - first_name: Samuel full_name: Boehringer, Samuel last_name: Boehringer - first_name: Aleksandar full_name: Bogojević, Aleksandar last_name: Bogojević - first_name: Kai full_name: Bongs, Kai last_name: Bongs - first_name: Daniela full_name: Bortoletto, Daniela last_name: Bortoletto - first_name: Philippe full_name: Bouyer, Philippe last_name: Bouyer - first_name: Christian full_name: Brand, Christian last_name: Brand - first_name: Oliver full_name: Buchmueller, Oliver last_name: Buchmueller - first_name: Gabriela full_name: Buica, Gabriela last_name: Buica - first_name: Sergio full_name: Calatroni, Sergio last_name: Calatroni - first_name: Léo full_name: Calmels, Léo last_name: Calmels - first_name: Priscilla full_name: Canizares, Priscilla last_name: Canizares - first_name: Benjamin full_name: Canuel, Benjamin last_name: Canuel - first_name: Ana full_name: Caramete, Ana last_name: Caramete - first_name: Laurentiu Ioan full_name: Caramete, Laurentiu Ioan last_name: Caramete - first_name: Matteo full_name: Carlesso, Matteo last_name: Carlesso - first_name: John full_name: Carlton, John last_name: Carlton - first_name: Samuel P. full_name: Carman, Samuel P. last_name: Carman - first_name: Andrew full_name: Carroll, Andrew last_name: Carroll - first_name: Mateo full_name: Casariego, Mateo last_name: Casariego - first_name: Minoas full_name: Chairetis, Minoas last_name: Chairetis - first_name: Vassilis full_name: Charmandaris, Vassilis last_name: Charmandaris - first_name: Upasna full_name: Chauhan, Upasna last_name: Chauhan - first_name: Jiajun full_name: Chen, Jiajun last_name: Chen - first_name: Maria Luisa Maria Luisa Marilù full_name: Chiofalo, Maria Luisa Maria Luisa Marilù last_name: Chiofalo - first_name: Donatella full_name: Ciampini, Donatella last_name: Ciampini - first_name: Alessia full_name: Cimbri, Alessia last_name: Cimbri - first_name: Pierre full_name: Cladé, Pierre last_name: Cladé - first_name: Jonathon full_name: Coleman, Jonathon last_name: Coleman - first_name: Florin Lucian full_name: Constantin, Florin Lucian last_name: Constantin - first_name: Carlo R. full_name: Contaldi, Carlo R. last_name: Contaldi - first_name: Robin full_name: Corgier, Robin last_name: Corgier - first_name: Bineet full_name: Dash, Bineet last_name: Dash - first_name: G. J. full_name: Davies, G. J. last_name: Davies - first_name: Claudia full_name: De Rham, Claudia last_name: De Rham - first_name: Albert full_name: De Roeck, Albert last_name: De Roeck - first_name: Daniel full_name: Derr, Daniel last_name: Derr - first_name: Soumyodeep full_name: Dey, Soumyodeep last_name: Dey - first_name: Fabio full_name: Di Pumpo, Fabio last_name: Di Pumpo - first_name: Goran S. full_name: Djordjevic, Goran S. last_name: Djordjevic - first_name: Babette full_name: Döbrich, Babette last_name: Döbrich - first_name: Peter full_name: Dornan, Peter last_name: Dornan - first_name: Michael full_name: Doser, Michael last_name: Doser - first_name: Giannis full_name: Drougakis, Giannis last_name: Drougakis - first_name: Jacob full_name: Dunningham, Jacob last_name: Dunningham - first_name: Alisher full_name: Duspayev, Alisher last_name: Duspayev - first_name: Sajan full_name: Easo, Sajan last_name: Easo - first_name: Joshua full_name: Eby, Joshua last_name: Eby - first_name: Maxim full_name: Efremov, Maxim last_name: Efremov - first_name: Gedminas full_name: Elertas, Gedminas last_name: Elertas - first_name: John full_name: Ellis, John last_name: Ellis - first_name: Nicholas full_name: Entin, Nicholas last_name: Entin - first_name: Stephen full_name: Fairhurst, Stephen last_name: Fairhurst - first_name: Mattia full_name: Fanì, Mattia last_name: Fanì - first_name: Farida full_name: Fassi, Farida last_name: Fassi - first_name: Pierre full_name: Fayet, Pierre last_name: Fayet - first_name: Daniel full_name: Felea, Daniel last_name: Felea - first_name: Jie full_name: Feng, Jie last_name: Feng - first_name: Robert full_name: Flack, Robert last_name: Flack - first_name: Chris full_name: Foot, Chris last_name: Foot - first_name: Tim full_name: Freegarde, Tim last_name: Freegarde - first_name: Elina full_name: Fuchs, Elina last_name: Fuchs - first_name: Naceur full_name: Gaaloul, Naceur last_name: Gaaloul - first_name: Dongfeng full_name: Gao, Dongfeng last_name: Gao - first_name: Susan full_name: Gardner, Susan last_name: Gardner - first_name: Barry M. full_name: Garraway, Barry M. last_name: Garraway - first_name: Carlos L. full_name: Garrido Alzar, Carlos L. last_name: Garrido Alzar - first_name: Alexandre full_name: Gauguet, Alexandre last_name: Gauguet - first_name: Enno full_name: Giese, Enno last_name: Giese - first_name: Patrick full_name: Gill, Patrick last_name: Gill - first_name: Gian F. full_name: Giudice, Gian F. last_name: Giudice - first_name: Eric P. full_name: Glasbrenner, Eric P. last_name: Glasbrenner - first_name: Jonah full_name: Glick, Jonah last_name: Glick - first_name: Peter W. full_name: Graham, Peter W. last_name: Graham - first_name: Eduardo full_name: Granados, Eduardo last_name: Granados - first_name: Paul F. full_name: Griffin, Paul F. last_name: Griffin - first_name: Jordan full_name: Gué, Jordan last_name: Gué - first_name: Saïda full_name: Guellati-Khelifa, Saïda last_name: Guellati-Khelifa - first_name: Subhadeep full_name: Gupta, Subhadeep last_name: Gupta - first_name: Vishu full_name: Gupta, Vishu last_name: Gupta - first_name: Lucia full_name: Hackermueller, Lucia last_name: Hackermueller - first_name: Martin full_name: Haehnelt, Martin last_name: Haehnelt - first_name: Timo full_name: Hakulinen, Timo last_name: Hakulinen - first_name: Klemens full_name: Hammerer, Klemens last_name: Hammerer - first_name: Ekim T. full_name: Hanımeli, Ekim T. last_name: Hanımeli - first_name: Tiffany full_name: Harte, Tiffany last_name: Harte - first_name: Sabrina full_name: Hartmann, Sabrina last_name: Hartmann - first_name: Leonie full_name: Hawkins, Leonie last_name: Hawkins - first_name: Aurelien full_name: Hees, Aurelien last_name: Hees - first_name: Alexander full_name: Herbst, Alexander last_name: Herbst - first_name: Thomas M. full_name: Hird, Thomas M. last_name: Hird - first_name: Richard full_name: Hobson, Richard last_name: Hobson - first_name: Jason full_name: Hogan, Jason last_name: Hogan - first_name: Bodil full_name: Holst, Bodil last_name: Holst - first_name: Michael full_name: Holynski, Michael last_name: Holynski - first_name: Onur full_name: Hosten, Onur id: 4C02D85E-F248-11E8-B48F-1D18A9856A87 last_name: Hosten orcid: 0000-0002-2031-204X - first_name: Chung Chuan full_name: Hsu, Chung Chuan last_name: Hsu - first_name: Wayne Cheng Wei full_name: Huang, Wayne Cheng Wei last_name: Huang - first_name: Kenneth M. full_name: Hughes, Kenneth M. last_name: Hughes - first_name: Kamran full_name: Hussain, Kamran last_name: Hussain - first_name: Gert full_name: Hütsi, Gert last_name: Hütsi - first_name: Antonio full_name: Iovino, Antonio last_name: Iovino - first_name: Maria Catalina full_name: Isfan, Maria Catalina last_name: Isfan - first_name: Gregor full_name: Janson, Gregor last_name: Janson - first_name: Peter full_name: Jeglič, Peter last_name: Jeglič - first_name: Philippe full_name: Jetzer, Philippe last_name: Jetzer - first_name: Yijun full_name: Jiang, Yijun last_name: Jiang - first_name: Gediminas full_name: Juzeliūnas, Gediminas last_name: Juzeliūnas - first_name: Wilhelm full_name: Kaenders, Wilhelm last_name: Kaenders - first_name: Matti full_name: Kalliokoski, Matti last_name: Kalliokoski - first_name: Alex full_name: Kehagias, Alex last_name: Kehagias - first_name: Eva full_name: Kilian, Eva last_name: Kilian - first_name: Carsten full_name: Klempt, Carsten last_name: Klempt - first_name: Peter full_name: Knight, Peter last_name: Knight - first_name: Soumen full_name: Koley, Soumen last_name: Koley - first_name: Bernd full_name: Konrad, Bernd last_name: Konrad - first_name: Tim full_name: Kovachy, Tim last_name: Kovachy - first_name: Markus full_name: Krutzik, Markus last_name: Krutzik - first_name: Mukesh full_name: Kumar, Mukesh last_name: Kumar - first_name: Pradeep full_name: Kumar, Pradeep last_name: Kumar - first_name: Hamza full_name: Labiad, Hamza last_name: Labiad - first_name: Shau Yu full_name: Lan, Shau Yu last_name: Lan - first_name: Arnaud full_name: Landragin, Arnaud last_name: Landragin - first_name: Greg full_name: Landsberg, Greg last_name: Landsberg - first_name: Mehdi full_name: Langlois, Mehdi last_name: Langlois - first_name: Bryony full_name: Lanigan, Bryony last_name: Lanigan - first_name: Bruno full_name: Leone, Bruno last_name: Leone - first_name: Christophe full_name: Le Poncin-Lafitte, Christophe last_name: Le Poncin-Lafitte - first_name: Samuel full_name: Lellouch, Samuel last_name: Lellouch - first_name: Marek full_name: Lewicki, Marek last_name: Lewicki - first_name: Yu Hung full_name: Lien, Yu Hung last_name: Lien - first_name: Lucas full_name: Lombriser, Lucas last_name: Lombriser - first_name: Elias Lopez full_name: Asamar, Elias Lopez last_name: Asamar - first_name: J. Luis full_name: Lopez-Gonzalez, J. Luis last_name: Lopez-Gonzalez - first_name: Chen full_name: Lu, Chen last_name: Lu - first_name: Giuseppe Gaetano full_name: Luciano, Giuseppe Gaetano last_name: Luciano - first_name: Nathan full_name: Lundblad, Nathan last_name: Lundblad - first_name: Cristian full_name: De J. López Monjaraz, Cristian last_name: De J. López Monjaraz - first_name: Adam full_name: Lowe, Adam last_name: Lowe - first_name: Mažena full_name: Mackoit-Sinkevičienė, Mažena last_name: Mackoit-Sinkevičienė - first_name: Michele full_name: Maggiore, Michele last_name: Maggiore - first_name: Anirban full_name: Majumdar, Anirban last_name: Majumdar - first_name: Konstantinos full_name: Makris, Konstantinos last_name: Makris - first_name: Azadeh full_name: Maleknejad, Azadeh last_name: Maleknejad - first_name: Anna L. full_name: Marchant, Anna L. last_name: Marchant - first_name: Agnese full_name: Mariotti, Agnese last_name: Mariotti - first_name: Christos full_name: Markou, Christos last_name: Markou - first_name: Barnaby full_name: Matthews, Barnaby last_name: Matthews - first_name: Anupam full_name: Mazumdar, Anupam last_name: Mazumdar - first_name: Christopher full_name: Mccabe, Christopher last_name: Mccabe - first_name: Matthias full_name: Meister, Matthias last_name: Meister - first_name: Giorgio full_name: Mentasti, Giorgio last_name: Mentasti - first_name: Jonathan full_name: Menu, Jonathan last_name: Menu - first_name: Giuseppe full_name: Messineo, Giuseppe last_name: Messineo - first_name: Bernd full_name: Meyer-Hoppe, Bernd last_name: Meyer-Hoppe - first_name: Salvatore full_name: Micalizio, Salvatore last_name: Micalizio - first_name: Federica full_name: Migliaccio, Federica last_name: Migliaccio - first_name: Peter full_name: Millington, Peter last_name: Millington - first_name: Milan full_name: Milosevic, Milan last_name: Milosevic - first_name: Abhay full_name: Mishra, Abhay last_name: Mishra - first_name: Jeremiah full_name: Mitchell, Jeremiah last_name: Mitchell - first_name: Gavin W. full_name: Morley, Gavin W. last_name: Morley - first_name: Noam full_name: Mouelle, Noam last_name: Mouelle - first_name: Jürgen full_name: Müller, Jürgen last_name: Müller - first_name: David full_name: Newbold, David last_name: Newbold - first_name: Wei Tou full_name: Ni, Wei Tou last_name: Ni - first_name: Christian full_name: Niehof, Christian last_name: Niehof - first_name: Johannes full_name: Noller, Johannes last_name: Noller - first_name: Senad full_name: Odžak, Senad last_name: Odžak - first_name: Daniel K.L. full_name: Oi, Daniel K.L. last_name: Oi - first_name: Andreas full_name: Oikonomou, Andreas last_name: Oikonomou - first_name: Yasser full_name: Omar, Yasser last_name: Omar - first_name: Chris full_name: Overstreet, Chris last_name: Overstreet - first_name: Vishnupriya full_name: Puthiya Veettil, Vishnupriya last_name: Puthiya Veettil - first_name: Julia full_name: Pahl, Julia last_name: Pahl - first_name: Sean full_name: Paling, Sean last_name: Paling - first_name: Zhongyin full_name: Pan, Zhongyin last_name: Pan - first_name: George full_name: Pappas, George last_name: Pappas - first_name: Vinay full_name: Pareek, Vinay last_name: Pareek - first_name: Elizabeth full_name: Pasatembou, Elizabeth last_name: Pasatembou - first_name: Mauro full_name: Paternostro, Mauro last_name: Paternostro - first_name: Vishal K. full_name: Pathak, Vishal K. last_name: Pathak - first_name: Emanuele full_name: Pelucchi, Emanuele last_name: Pelucchi - first_name: Franck full_name: Pereira Dos Santos, Franck last_name: Pereira Dos Santos - first_name: Achim full_name: Peters, Achim last_name: Peters - first_name: Annie full_name: Pichery, Annie last_name: Pichery - first_name: Igor full_name: Pikovski, Igor last_name: Pikovski - first_name: Apostolos full_name: Pilaftsis, Apostolos last_name: Pilaftsis - first_name: Florentina Crenguta full_name: Pislan, Florentina Crenguta last_name: Pislan - first_name: Robert full_name: Plunkett, Robert last_name: Plunkett - first_name: Rosa full_name: Poggiani, Rosa last_name: Poggiani - first_name: Marco full_name: Prevedelli, Marco last_name: Prevedelli - first_name: Johann full_name: Rafelski, Johann last_name: Rafelski - first_name: Juhan full_name: Raidal, Juhan last_name: Raidal - first_name: Martti full_name: Raidal, Martti last_name: Raidal - first_name: Ernst Maria full_name: Rasel, Ernst Maria last_name: Rasel - first_name: Sébastien full_name: Renaux-Petel, Sébastien last_name: Renaux-Petel - first_name: Andrea full_name: Richaud, Andrea last_name: Richaud - first_name: Pedro full_name: Rivero-Antunez, Pedro last_name: Rivero-Antunez - first_name: Tangui full_name: Rodzinka, Tangui last_name: Rodzinka - first_name: Albert full_name: Roura, Albert last_name: Roura - first_name: Jan full_name: Rudolph, Jan last_name: Rudolph - first_name: Dylan full_name: Sabulsky, Dylan last_name: Sabulsky - first_name: Marianna S. full_name: Safronova, Marianna S. last_name: Safronova - first_name: Mairi full_name: Sakellariadou, Mairi last_name: Sakellariadou - first_name: Leonardo full_name: Salvi, Leonardo last_name: Salvi - first_name: Muhammed full_name: Sameed, Muhammed last_name: Sameed - first_name: Sumit full_name: Sarkar, Sumit last_name: Sarkar - first_name: Patrik full_name: Schach, Patrik last_name: Schach - first_name: Stefan Alaric full_name: Schäffer, Stefan Alaric last_name: Schäffer - first_name: Jesse full_name: Schelfhout, Jesse last_name: Schelfhout - first_name: Manuel full_name: Schilling, Manuel last_name: Schilling - first_name: Vladimir full_name: Schkolnik, Vladimir last_name: Schkolnik - first_name: Wolfgang P. full_name: Schleich, Wolfgang P. last_name: Schleich - first_name: Dennis full_name: Schlippert, Dennis last_name: Schlippert - first_name: Ulrich full_name: Schneider, Ulrich last_name: Schneider - first_name: Florian full_name: Schreck, Florian last_name: Schreck - first_name: Ariel full_name: Schwartzman, Ariel last_name: Schwartzman - first_name: Nico full_name: Schwersenz, Nico last_name: Schwersenz - first_name: Olga full_name: Sergijenko, Olga last_name: Sergijenko - first_name: Haifa Rejeb full_name: Sfar, Haifa Rejeb last_name: Sfar - first_name: Lijing full_name: Shao, Lijing last_name: Shao - first_name: Ian full_name: Shipsey, Ian last_name: Shipsey - first_name: Jing full_name: Shu, Jing last_name: Shu - first_name: Yeshpal full_name: Singh, Yeshpal last_name: Singh - first_name: Carlos F. full_name: Sopuerta, Carlos F. last_name: Sopuerta - first_name: Marianna full_name: Sorba, Marianna last_name: Sorba - first_name: Fiodor full_name: Sorrentino, Fiodor last_name: Sorrentino - first_name: Alessandro D.A.M. full_name: Spallicci, Alessandro D.A.M. last_name: Spallicci - first_name: Petruta full_name: Stefanescu, Petruta last_name: Stefanescu - first_name: Nikolaos full_name: Stergioulas, Nikolaos last_name: Stergioulas - first_name: Daniel full_name: Stoerk, Daniel last_name: Stoerk - first_name: Hrudya full_name: Thaivalappil Sunilkumar, Hrudya last_name: Thaivalappil Sunilkumar - first_name: Jannik full_name: Ströhle, Jannik last_name: Ströhle - first_name: Zoie full_name: Tam, Zoie last_name: Tam - first_name: Dhruv full_name: Tandon, Dhruv last_name: Tandon - first_name: Yijun full_name: Tang, Yijun last_name: Tang - first_name: Dorothee full_name: Tell, Dorothee last_name: Tell - first_name: Jacques full_name: Tempere, Jacques last_name: Tempere - first_name: Dylan J. full_name: Temples, Dylan J. last_name: Temples - first_name: Rohit P. full_name: Thampy, Rohit P. last_name: Thampy - first_name: Ingmari C. full_name: Tietje, Ingmari C. last_name: Tietje - first_name: Guglielmo M. full_name: Tino, Guglielmo M. last_name: Tino - first_name: Jonathan N. full_name: Tinsley, Jonathan N. last_name: Tinsley - first_name: Ovidiu full_name: Tintareanu Mircea, Ovidiu last_name: Tintareanu Mircea - first_name: Kimberly full_name: Tkalčec, Kimberly last_name: Tkalčec - first_name: Andrew J. full_name: Tolley, Andrew J. last_name: Tolley - first_name: Vincenza full_name: Tornatore, Vincenza last_name: Tornatore - first_name: Alejandro full_name: Torres-Orjuela, Alejandro last_name: Torres-Orjuela - first_name: Philipp full_name: Treutlein, Philipp last_name: Treutlein - first_name: Andrea full_name: Trombettoni, Andrea last_name: Trombettoni - first_name: Christian full_name: Ufrecht, Christian last_name: Ufrecht - first_name: Juan full_name: Urrutia, Juan last_name: Urrutia - first_name: Tristan full_name: Valenzuela, Tristan last_name: Valenzuela - first_name: Linda R. full_name: Valerio, Linda R. last_name: Valerio - first_name: Maurits full_name: Van Der Grinten, Maurits last_name: Van Der Grinten - first_name: Ville full_name: Vaskonen, Ville last_name: Vaskonen - first_name: Verónica full_name: Vázquez-Aceves, Verónica last_name: Vázquez-Aceves - first_name: Hardi full_name: Veermäe, Hardi last_name: Veermäe - first_name: Flavio full_name: Vetrano, Flavio last_name: Vetrano - first_name: Nikolay V. full_name: Vitanov, Nikolay V. last_name: Vitanov - first_name: Wolf full_name: Von Klitzing, Wolf last_name: Von Klitzing - first_name: Sebastian full_name: Wald, Sebastian id: 133F200A-B015-11E9-AD41-0EDAE5697425 last_name: Wald orcid: 0000-0002-5869-1604 - first_name: Thomas full_name: Walker, Thomas last_name: Walker - first_name: Reinhold full_name: Walser, Reinhold last_name: Walser - first_name: Jin full_name: Wang, Jin last_name: Wang - first_name: Yan full_name: Wang, Yan last_name: Wang - first_name: C. A. full_name: Weidner, C. A. last_name: Weidner - first_name: André full_name: Wenzlawski, André last_name: Wenzlawski - first_name: Michael full_name: Werner, Michael last_name: Werner - first_name: Lisa full_name: Wörner, Lisa last_name: Wörner - first_name: Mohamed E. full_name: Yahia, Mohamed E. last_name: Yahia - first_name: Efe full_name: Yazgan, Efe last_name: Yazgan - first_name: Emmanuel full_name: Zambrini Cruzeiro, Emmanuel last_name: Zambrini Cruzeiro - first_name: M. full_name: Zarei, M. last_name: Zarei - first_name: Mingsheng full_name: Zhan, Mingsheng last_name: Zhan - first_name: Shengnan full_name: Zhang, Shengnan last_name: Zhang - first_name: Lin full_name: Zhou, Lin last_name: Zhou - first_name: Erik full_name: Zupanič, Erik last_name: Zupanič citation: ama: 'Abdalla A, Abe M, Abend S, et al. Terrestrial Very-Long-Baseline Atom Interferometry: Summary of the second workshop. EPJ Quantum Technology. 2025;12. doi:10.1140/epjqt/s40507-025-00344-3' apa: 'Abdalla, A., Abe, M., Abend, S., Abidi, M., Aidelsburger, M., Alibabaei, A., … Zupanič, E. (2025). Terrestrial Very-Long-Baseline Atom Interferometry: Summary of the second workshop. EPJ Quantum Technology. Springer Nature. https://doi.org/10.1140/epjqt/s40507-025-00344-3' chicago: 'Abdalla, Adam, Mahiro Abe, Sven Abend, Mouine Abidi, Monika Aidelsburger, Ashkan Alibabaei, Baptiste Allard, et al. “Terrestrial Very-Long-Baseline Atom Interferometry: Summary of the Second Workshop.” EPJ Quantum Technology. Springer Nature, 2025. https://doi.org/10.1140/epjqt/s40507-025-00344-3.' ieee: 'A. Abdalla et al., “Terrestrial Very-Long-Baseline Atom Interferometry: Summary of the second workshop,” EPJ Quantum Technology, vol. 12. Springer Nature, 2025.' ista: 'Abdalla A et al. 2025. Terrestrial Very-Long-Baseline Atom Interferometry: Summary of the second workshop. EPJ Quantum Technology. 12, 42.' mla: 'Abdalla, Adam, et al. “Terrestrial Very-Long-Baseline Atom Interferometry: Summary of the Second Workshop.” EPJ Quantum Technology, vol. 12, 42, Springer Nature, 2025, doi:10.1140/epjqt/s40507-025-00344-3.' short: A. Abdalla, M. Abe, S. Abend, M. Abidi, M. Aidelsburger, A. Alibabaei, B. Allard, J. Antoniadis, G. Arduini, N. Augst, P. Balamatsias, A. Balaž, H. Banks, R.L. Barcklay, M. Barone, M. Barsanti, M.G. Bason, A. Bassi, J.B. Bayle, C.F.A. Baynham, Q. Beaufils, S. Beldjoudi, A. Belić, S. Bennetts, J. Bernabeu, A. Bertoldi, C. Bigard, N.P. Bigelow, R. Bingham, D. Blas, A. Bobrick, S. Boehringer, A. Bogojević, K. Bongs, D. Bortoletto, P. Bouyer, C. Brand, O. Buchmueller, G. Buica, S. Calatroni, L. Calmels, P. Canizares, B. Canuel, A. Caramete, L.I. Caramete, M. Carlesso, J. Carlton, S.P. Carman, A. Carroll, M. Casariego, M. Chairetis, V. Charmandaris, U. Chauhan, J. Chen, M.L.M.L.M. Chiofalo, D. Ciampini, A. Cimbri, P. Cladé, J. Coleman, F.L. Constantin, C.R. Contaldi, R. Corgier, B. Dash, G.J. Davies, C. De Rham, A. De Roeck, D. Derr, S. Dey, F. Di Pumpo, G.S. Djordjevic, B. Döbrich, P. Dornan, M. Doser, G. Drougakis, J. Dunningham, A. Duspayev, S. Easo, J. Eby, M. Efremov, G. Elertas, J. Ellis, N. Entin, S. Fairhurst, M. Fanì, F. Fassi, P. Fayet, D. Felea, J. Feng, R. Flack, C. Foot, T. Freegarde, E. Fuchs, N. Gaaloul, D. Gao, S. Gardner, B.M. Garraway, C.L. Garrido Alzar, A. Gauguet, E. Giese, P. Gill, G.F. Giudice, E.P. Glasbrenner, J. Glick, P.W. Graham, E. Granados, P.F. Griffin, J. Gué, S. Guellati-Khelifa, S. Gupta, V. Gupta, L. Hackermueller, M. Haehnelt, T. Hakulinen, K. Hammerer, E.T. Hanımeli, T. Harte, S. Hartmann, L. Hawkins, A. Hees, A. Herbst, T.M. Hird, R. Hobson, J. Hogan, B. Holst, M. Holynski, O. Hosten, C.C. Hsu, W.C.W. Huang, K.M. Hughes, K. Hussain, G. Hütsi, A. Iovino, M.C. Isfan, G. Janson, P. Jeglič, P. Jetzer, Y. Jiang, G. Juzeliūnas, W. Kaenders, M. Kalliokoski, A. Kehagias, E. Kilian, C. Klempt, P. Knight, S. Koley, B. Konrad, T. Kovachy, M. Krutzik, M. Kumar, P. Kumar, H. Labiad, S.Y. Lan, A. Landragin, G. Landsberg, M. Langlois, B. Lanigan, B. Leone, C. Le Poncin-Lafitte, S. Lellouch, M. Lewicki, Y.H. Lien, L. Lombriser, E.L. Asamar, J.L. Lopez-Gonzalez, C. Lu, G.G. Luciano, N. Lundblad, C. De J. López Monjaraz, A. Lowe, M. Mackoit-Sinkevičienė, M. Maggiore, A. Majumdar, K. Makris, A. Maleknejad, A.L. Marchant, A. Mariotti, C. Markou, B. Matthews, A. Mazumdar, C. Mccabe, M. Meister, G. Mentasti, J. Menu, G. Messineo, B. Meyer-Hoppe, S. Micalizio, F. Migliaccio, P. Millington, M. Milosevic, A. Mishra, J. Mitchell, G.W. Morley, N. Mouelle, J. Müller, D. Newbold, W.T. Ni, C. Niehof, J. Noller, S. Odžak, D.K.L. Oi, A. Oikonomou, Y. Omar, C. Overstreet, V. Puthiya Veettil, J. Pahl, S. Paling, Z. Pan, G. Pappas, V. Pareek, E. Pasatembou, M. Paternostro, V.K. Pathak, E. Pelucchi, F. Pereira Dos Santos, A. Peters, A. Pichery, I. Pikovski, A. Pilaftsis, F.C. Pislan, R. Plunkett, R. Poggiani, M. Prevedelli, J. Rafelski, J. Raidal, M. Raidal, E.M. Rasel, S. Renaux-Petel, A. Richaud, P. Rivero-Antunez, T. Rodzinka, A. Roura, J. Rudolph, D. Sabulsky, M.S. Safronova, M. Sakellariadou, L. Salvi, M. Sameed, S. Sarkar, P. Schach, S.A. Schäffer, J. Schelfhout, M. Schilling, V. Schkolnik, W.P. Schleich, D. Schlippert, U. Schneider, F. Schreck, A. Schwartzman, N. Schwersenz, O. Sergijenko, H.R. Sfar, L. Shao, I. Shipsey, J. Shu, Y. Singh, C.F. Sopuerta, M. Sorba, F. Sorrentino, A.D.A.M. Spallicci, P. Stefanescu, N. Stergioulas, D. Stoerk, H. Thaivalappil Sunilkumar, J. Ströhle, Z. Tam, D. Tandon, Y. Tang, D. Tell, J. Tempere, D.J. Temples, R.P. Thampy, I.C. Tietje, G.M. Tino, J.N. Tinsley, O. Tintareanu Mircea, K. Tkalčec, A.J. Tolley, V. Tornatore, A. Torres-Orjuela, P. Treutlein, A. Trombettoni, C. Ufrecht, J. Urrutia, T. Valenzuela, L.R. Valerio, M. Van Der Grinten, V. Vaskonen, V. Vázquez-Aceves, H. Veermäe, F. Vetrano, N.V. Vitanov, W. Von Klitzing, S. Wald, T. Walker, R. Walser, J. Wang, Y. Wang, C.A. Weidner, A. Wenzlawski, M. Werner, L. Wörner, M.E. Yahia, E. Yazgan, E. Zambrini Cruzeiro, M. Zarei, M. Zhan, S. Zhang, L. Zhou, E. Zupanič, EPJ Quantum Technology 12 (2025). date_created: 2025-05-04T22:02:30Z date_published: 2025-04-03T00:00:00Z date_updated: 2025-09-30T12:22:04Z day: '03' ddc: - '530' department: - _id: OnHo doi: 10.1140/epjqt/s40507-025-00344-3 external_id: arxiv: - '2412.14960' isi: - '001489653300001' file: - access_level: open_access checksum: 00c7a97d87f7a6314df5b0c2213fbb02 content_type: application/pdf creator: dernst date_created: 2025-05-05T10:52:52Z date_updated: 2025-05-05T10:52:52Z file_id: '19653' file_name: 2025_EPJQuantumTech_Abdalla.pdf file_size: 14352192 relation: main_file success: 1 file_date_updated: 2025-05-05T10:52:52Z has_accepted_license: '1' intvolume: ' 12' isi: 1 language: - iso: eng month: '04' oa: 1 oa_version: Published Version publication: EPJ Quantum Technology publication_identifier: eissn: - 2196-0763 publication_status: published publisher: Springer Nature quality_controlled: '1' scopus_import: '1' status: public title: 'Terrestrial Very-Long-Baseline Atom Interferometry: Summary of the second workshop' tmp: image: /images/cc_by_nc_nd.png legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) short: CC BY-NC-ND (4.0) type: journal_article user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345 volume: 12 year: '2025' ... --- OA_place: publisher OA_type: hybrid _id: '19733' abstract: - lang: eng text: One of the most striking quantum phenomena is superposition, where one particle simultaneously inhabits different states. Most methods to verify coherent superposition are indirect, in that they require the distinct states to be recombined. Here, we adapt an xor game, in which a “test” photon is placed in a superposition of two orthogonal spatial modes, and each mode is sent to separated parties who perform local measurements on their modes without reinterfering the original modes. We show that by using a second identical “measurement” photon the parties are nonetheless able to verify if the test photon was placed in coherent superposition of the two spatial modes. We then turn this game into a resource-efficient verification scheme, obtaining a confidence that the particle is superposed which approaches unity exponentially fast. We demonstrate our scheme using a single photon, obtaining a 99% confidence that the particle is superposed with only 37 copies. Our work shows the utility of xor games to verify quantum resources, allowing us to efficiently detect quantum superposition without reinterfering the superposed modes. acknowledgement: This project has received funding from the European Union's Horizon 2020 and Horizon Europe research and innovation programmes under Grant Agreements No. 899368 (EPIQUS) and No. 101135288 (EPIQUE), the Marie Skłodowska-Curie Grant Agreement No. 956071 (AppQInfo), and the QuantERA II Programme under Grant Agreement No. 101017733 (PhoMemtor). The financial support by the Austrian Federal Ministry of Labour and Economy, the National Foundation for Research, Technology and Development, and the Christian Doppler Research Association is gratefully acknowledged. L.A.R. acknowledges support from the Erwin Schrödinger Center for Quantum Science & Technology (ESQ Discovery). This research was funded in whole or in part from the Austrian Science Fund (FWF) through [Grant No. 10.55776/COE1] (Quantum Science Austria), [Grant No. 10.55776/F71] (BeyondC), [Grant No. 10.55776/FG5] (Research Group 5), [Grant No. 10.55776/I6002] (PhoMemtor), and [Grant No. 10.55776/P36994] (Quantum Interference). article_number: L050402 article_processing_charge: No article_type: letter_note arxiv: 1 author: - first_name: Daniel full_name: Kun, Daniel last_name: Kun - first_name: Karl T full_name: Strömberg, Karl T id: 68011cd2-da32-11ee-a930-b2774c7aba5f last_name: Strömberg - first_name: Michele full_name: Spagnolo, Michele last_name: Spagnolo - first_name: Borivoje full_name: Dakić, Borivoje last_name: Dakić - first_name: Lee A. full_name: Rozema, Lee A. last_name: Rozema - first_name: Philip full_name: Walther, Philip last_name: Walther citation: ama: Kun D, Strömberg KT, Spagnolo M, Dakić B, Rozema LA, Walther P. Direct and efficient detection of quantum superposition. Physical Review A. 2025;111(5). doi:10.1103/PhysRevA.111.L050402 apa: Kun, D., Strömberg, K. T., Spagnolo, M., Dakić, B., Rozema, L. A., & Walther, P. (2025). Direct and efficient detection of quantum superposition. Physical Review A. American Physical Society. https://doi.org/10.1103/PhysRevA.111.L050402 chicago: Kun, Daniel, Karl T Strömberg, Michele Spagnolo, Borivoje Dakić, Lee A. Rozema, and Philip Walther. “Direct and Efficient Detection of Quantum Superposition.” Physical Review A. American Physical Society, 2025. https://doi.org/10.1103/PhysRevA.111.L050402. ieee: D. Kun, K. T. Strömberg, M. Spagnolo, B. Dakić, L. A. Rozema, and P. Walther, “Direct and efficient detection of quantum superposition,” Physical Review A, vol. 111, no. 5. American Physical Society, 2025. ista: Kun D, Strömberg KT, Spagnolo M, Dakić B, Rozema LA, Walther P. 2025. Direct and efficient detection of quantum superposition. Physical Review A. 111(5), L050402. mla: Kun, Daniel, et al. “Direct and Efficient Detection of Quantum Superposition.” Physical Review A, vol. 111, no. 5, L050402, American Physical Society, 2025, doi:10.1103/PhysRevA.111.L050402. short: D. Kun, K.T. Strömberg, M. Spagnolo, B. Dakić, L.A. Rozema, P. Walther, Physical Review A 111 (2025). date_created: 2025-05-25T22:16:54Z date_published: 2025-05-16T00:00:00Z date_updated: 2025-09-30T12:40:18Z day: '16' ddc: - '530' department: - _id: OnHo doi: 10.1103/PhysRevA.111.L050402 external_id: arxiv: - '2405.08065' isi: - '001501941500006' file: - access_level: open_access checksum: b83295a8f597b7781d8e7bfa3b393b42 content_type: application/pdf creator: dernst date_created: 2025-05-28T09:16:03Z date_updated: 2025-05-28T09:16:03Z file_id: '19755' file_name: 2025_PhysReviewA_Kun.pdf file_size: 571784 relation: main_file success: 1 file_date_updated: 2025-05-28T09:16:03Z has_accepted_license: '1' intvolume: ' 111' isi: 1 issue: '5' language: - iso: eng month: '05' oa: 1 oa_version: Published Version publication: Physical Review A publication_identifier: eissn: - 2469-9934 issn: - 2469-9926 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Direct and efficient detection of quantum superposition tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345 volume: 111 year: '2025' ... --- _id: '20842' abstract: - lang: eng text: Probing the possibility of entanglement generation through gravity offers a path to tackle the question of whether gravitational fields possess a quantum mechanical nature. A potential realization necessitates systems with low-frequency dynamics at an optimal mass scale, for which the microgram-to-milligram range is a strong contender. Here, after refining a figure-of-merit for the problem, we present a 1-milligram torsional pendulum operating at 18 Hz. We demonstrate laser cooling its motion from room temperature to 240~microkelvins, surpassing by over 20-fold the coldest motions attained for oscillators ranging from micrograms to kilograms. We quantify and contrast the utility of the current approach with other platforms. The achieved performance and large improvement potential highlight milligram-scale torsional pendulums as a powerful platform for precision measurements relevant to future studies at the quantum-gravity interface. article_processing_charge: No author: - first_name: Sofya full_name: Agafonova, Sofya id: 09501ff6-dca7-11ea-a8ae-b3e0b9166e80 last_name: Agafonova orcid: 0000-0003-0582-2946 citation: ama: 'Agafonova S. Research Data for: “One-milligram torsional pendulum toward experiments at the quantum-gravity interface.” 2025. doi:10.15479/AT-ISTA-20842' apa: 'Agafonova, S. (2025). Research Data for: “One-milligram torsional pendulum toward experiments at the quantum-gravity interface.” Institute of Science and Technology Austria. https://doi.org/10.15479/AT-ISTA-20842' chicago: 'Agafonova, Sofia. “Research Data for: ‘One-Milligram Torsional Pendulum toward Experiments at the Quantum-Gravity Interface.’” Institute of Science and Technology Austria, 2025. https://doi.org/10.15479/AT-ISTA-20842.' ieee: 'S. Agafonova, “Research Data for: ‘One-milligram torsional pendulum toward experiments at the quantum-gravity interface.’” Institute of Science and Technology Austria, 2025.' ista: 'Agafonova S. 2025. Research Data for: ‘One-milligram torsional pendulum toward experiments at the quantum-gravity interface’, Institute of Science and Technology Austria, 10.15479/AT-ISTA-20842.' mla: 'Agafonova, Sofia. Research Data for: “One-Milligram Torsional Pendulum toward Experiments at the Quantum-Gravity Interface.” Institute of Science and Technology Austria, 2025, doi:10.15479/AT-ISTA-20842.' short: S. Agafonova, (2025). contributor: - first_name: Pere last_name: Rosello - first_name: Manuel last_name: Mekonnen - contributor_type: supervisor first_name: Onur id: 4C02D85E-F248-11E8-B48F-1D18A9856A87 last_name: Hosten orcid: 0000-0002-2031-204X corr_author: '1' date_created: 2025-12-21T14:23:50Z date_published: 2025-12-22T00:00:00Z date_updated: 2026-03-16T10:09:21Z day: '22' department: - _id: GradSch - _id: OnHo doi: 10.15479/AT-ISTA-20842 file: - access_level: open_access checksum: 7af34e4226a00cdcb7f154272050e217 content_type: application/x-zip-compressed creator: sagafono date_created: 2025-12-22T13:45:30Z date_updated: 2025-12-22T13:45:30Z file_id: '20854' file_name: AllData.zip file_size: 146656591 relation: main_file success: 1 - access_level: open_access checksum: 71806a2ef9fb26ad7b78e04c6754ee4e content_type: application/x-zip-compressed creator: sagafono date_created: 2025-12-22T13:45:33Z date_updated: 2025-12-22T13:45:33Z file_id: '20855' file_name: SourceData.zip file_size: 93470129 relation: main_file success: 1 - access_level: open_access checksum: 08facd1b4a102f83e4d99d48a85b258d content_type: text/plain creator: sagafono date_created: 2025-12-22T13:51:09Z date_updated: 2025-12-22T13:51:09Z file_id: '20856' file_name: readme.txt file_size: 461 relation: main_file success: 1 file_date_updated: 2025-12-22T13:51:09Z has_accepted_license: '1' month: '12' oa: 1 oa_version: None project: - _id: bdb2a702-d553-11ed-ba76-f12e3e5a3bc6 grant_number: '101087907' name: 'A quantum hybrid of atoms and milligram-scale pendulums: towards gravitational quantum mechanics' publisher: Institute of Science and Technology Austria related_material: record: - id: '20840' relation: used_in_publication status: public status: public title: 'Research Data for: ''One-milligram torsional pendulum toward experiments at the quantum-gravity interface''' tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: research_data user_id: 68b8ca59-c5b3-11ee-8790-cd641c68093d year: '2025' ... --- OA_embargo: '6' OA_place: publisher _id: '20798' alternative_title: - ISTA Thesis article_processing_charge: No author: - first_name: Sebastian full_name: Wald, Sebastian id: 133F200A-B015-11E9-AD41-0EDAE5697425 last_name: Wald orcid: 0000-0002-5869-1604 citation: ama: Wald S. Atoms in a propagating-wave cavity for squeezed Mach-Zehnder atom interferometry. 2025. doi:10.15479/AT-ISTA-20798 apa: Wald, S. (2025). Atoms in a propagating-wave cavity for squeezed Mach-Zehnder atom interferometry. Institute of Science and Technology Austria. https://doi.org/10.15479/AT-ISTA-20798 chicago: Wald, Sebastian. “Atoms in a Propagating-Wave Cavity for Squeezed Mach-Zehnder Atom Interferometry.” Institute of Science and Technology Austria, 2025. https://doi.org/10.15479/AT-ISTA-20798. ieee: S. Wald, “Atoms in a propagating-wave cavity for squeezed Mach-Zehnder atom interferometry,” Institute of Science and Technology Austria, 2025. ista: Wald S. 2025. Atoms in a propagating-wave cavity for squeezed Mach-Zehnder atom interferometry. Institute of Science and Technology Austria. mla: Wald, Sebastian. Atoms in a Propagating-Wave Cavity for Squeezed Mach-Zehnder Atom Interferometry. Institute of Science and Technology Austria, 2025, doi:10.15479/AT-ISTA-20798. short: S. Wald, Atoms in a Propagating-Wave Cavity for Squeezed Mach-Zehnder Atom Interferometry, Institute of Science and Technology Austria, 2025. corr_author: '1' date_created: 2025-12-11T11:48:11Z date_published: 2025-12-11T00:00:00Z date_updated: 2026-04-07T12:35:11Z day: '11' ddc: - '530' degree_awarded: PhD department: - _id: GradSch - _id: OnHo doi: 10.15479/AT-ISTA-20798 file: - access_level: closed checksum: 1be72faf529a5e8a2d03cb3d5f808b77 content_type: application/pdf creator: swald date_created: 2025-12-12T11:53:42Z date_updated: 2025-12-17T09:46:34Z embargo: 2026-06-15 embargo_to: open_access file_id: '20809' file_name: 2025_Wald_Sebastian_Thesis.pdf file_size: 47536855 relation: main_file - access_level: closed checksum: 8c3a1904dceb4bcd04bc9f14b2594bab content_type: application/x-zip-compressed creator: swald date_created: 2025-12-12T11:54:55Z date_updated: 2025-12-12T13:07:32Z file_id: '20810' file_name: 2025_Wald_Sebastian_Thesis.zip file_size: 40127601 relation: source_file file_date_updated: 2025-12-17T09:46:34Z has_accepted_license: '1' keyword: - entanglement-enhanced atom interferometry - cavity QED - spin-squeezing - dipole trap - quantum optics language: - iso: eng month: '12' oa_version: Published Version page: '152' publication_identifier: isbn: - 978-3-99078-075-6 issn: - 2663-337X publication_status: published publisher: Institute of Science and Technology Austria related_material: record: - id: '14759' relation: part_of_dissertation status: public status: public supervisor: - first_name: Onur full_name: Hosten, Onur id: 4C02D85E-F248-11E8-B48F-1D18A9856A87 last_name: Hosten orcid: 0000-0002-2031-204X title: Atoms in a propagating-wave cavity for squeezed Mach-Zehnder atom interferometry tmp: image: /images/cc_by_nc.png legal_code_url: https://creativecommons.org/licenses/by-nc/4.0/legalcode name: Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) short: CC BY-NC (4.0) type: dissertation user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd year: '2025' ... --- APC_amount: 3393,38 EUR DOAJ_listed: '1' OA_place: publisher OA_type: gold _id: '14802' abstract: - lang: eng text: Frequency-stable lasers form the back bone of precision measurements in science and technology. Such lasers typically attain their stability through frequency locking to reference cavities. State-of-the-art locking performances to date had been achieved using frequency modulation based methods, complemented with active drift cancellation systems. We demonstrate an all passive, modulation-free laser-cavity locking technique (squash locking) that utilizes changes in spatial beam ellipticity for error signal generation, and a coherent polarization post-selection for noise resilience. By comparing two identically built proof-of-principle systems, we show a frequency locking instability of 5×10−7 relative to the cavity linewidth at 10 s averaging. The results surpass the demonstrated performances of methods engineered over the last five decades, potentially enabling an advancement in the precision control of lasers, while creating avenues for bridging the performance gaps between industrial grade lasers with scientific ones due to the afforded simplicity and scalability. acknowledgement: We thank Rishabh Sahu and Sebastian Wald for technical contributions to the experiment. Funding by Institute of Science and Technology Austria. article_processing_charge: Yes article_type: original author: - first_name: Fritz R full_name: Diorico, Fritz R id: 2E054C4C-F248-11E8-B48F-1D18A9856A87 last_name: Diorico orcid: 0000-0002-4947-8924 - first_name: Artem full_name: Zhutov, Artem id: 0f02ed6a-b514-11ee-b891-8379c5f19cb7 last_name: Zhutov - first_name: Onur full_name: Hosten, Onur id: 4C02D85E-F248-11E8-B48F-1D18A9856A87 last_name: Hosten orcid: 0000-0002-2031-204X citation: ama: 'Diorico FR, Zhutov A, Hosten O. Laser-cavity locking utilizing beam ellipticity: accessing the 10−7 instability scale relative to cavity linewidth. Optica. 2024;11(1):26-31. doi:10.1364/optica.507451' apa: 'Diorico, F. R., Zhutov, A., & Hosten, O. (2024). Laser-cavity locking utilizing beam ellipticity: accessing the 10−7 instability scale relative to cavity linewidth. Optica. Optica Publishing Group. https://doi.org/10.1364/optica.507451' chicago: 'Diorico, Fritz R, Artem Zhutov, and Onur Hosten. “Laser-Cavity Locking Utilizing Beam Ellipticity: Accessing the 10−7 Instability Scale Relative to Cavity Linewidth.” Optica. Optica Publishing Group, 2024. https://doi.org/10.1364/optica.507451.' ieee: 'F. R. Diorico, A. Zhutov, and O. Hosten, “Laser-cavity locking utilizing beam ellipticity: accessing the 10−7 instability scale relative to cavity linewidth,” Optica, vol. 11, no. 1. Optica Publishing Group, pp. 26–31, 2024.' ista: 'Diorico FR, Zhutov A, Hosten O. 2024. Laser-cavity locking utilizing beam ellipticity: accessing the 10−7 instability scale relative to cavity linewidth. Optica. 11(1), 26–31.' mla: 'Diorico, Fritz R., et al. “Laser-Cavity Locking Utilizing Beam Ellipticity: Accessing the 10−7 Instability Scale Relative to Cavity Linewidth.” Optica, vol. 11, no. 1, Optica Publishing Group, 2024, pp. 26–31, doi:10.1364/optica.507451.' short: F.R. Diorico, A. Zhutov, O. Hosten, Optica 11 (2024) 26–31. corr_author: '1' date_created: 2024-01-15T10:25:38Z date_published: 2024-01-20T00:00:00Z date_updated: 2025-09-04T12:13:27Z day: '20' ddc: - '530' department: - _id: OnHo doi: 10.1364/optica.507451 external_id: isi: - '001202817000004' file: - access_level: open_access checksum: eb99ca7d0fe73e22f121875175546ed7 content_type: application/pdf creator: dernst date_created: 2024-01-17T08:53:16Z date_updated: 2024-01-17T08:53:16Z file_id: '14824' file_name: 2023_Optica_Diorico.pdf file_size: 4558986 relation: main_file success: 1 file_date_updated: 2024-01-17T08:53:16Z has_accepted_license: '1' intvolume: ' 11' isi: 1 issue: '1' keyword: - Atomic and Molecular Physics - and Optics - Electronic - Optical and Magnetic Materials language: - iso: eng month: '01' oa: 1 oa_version: Published Version page: 26-31 publication: Optica publication_identifier: issn: - 2334-2536 publication_status: published publisher: Optica Publishing Group quality_controlled: '1' scopus_import: '1' status: public title: 'Laser-cavity locking utilizing beam ellipticity: accessing the 10−7 instability scale relative to cavity linewidth' tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345 volume: 11 year: '2024' ... --- APC_amount: 2933,65 EUR DOAJ_listed: '1' OA_place: publisher OA_type: gold _id: '14980' abstract: - lang: eng text: Precision sensing and manipulation of milligram-scale mechanical oscillators has attracted growing interest in the fields of table-top explorations of gravity and tests of quantum mechanics at macroscopic scales. Torsional oscillators present an opportunity in this regard due to their remarked isolation from environmental noise. For torsional motion, an effective employment of optical cavities to enhance optomechanical interactions—as already established for linear oscillators—so far faced certain challenges. Here, we propose a concept for sensing and manipulating torsional motion, where exclusively the torsional rotations of a pendulum are mapped onto the path length of a single two-mirror optical cavity. The concept inherently alleviates many limitations of previous approaches. A proof-of-principle experiment is conducted with a rigidly controlled pendulum to explore the sensing aspects of the concept and to identify practical limitations in a potential state-of-the art setup. Based on this study, we anticipate development of precision torque sensors utilizing torsional pendulums that can support sensitivities below 10−19Nm/√Hz, while the motion of the pendulums are dominated by quantum radiation pressure noise at sub-microwatts of incoming laser power. These developments will provide horizons for experiments at the interface of quantum mechanics and gravity. acknowledgement: "We thank Pere Rosselló for his contributions to the initial modeling of the presented sensing technique. This work was supported by Institute of Science and Technology Austria, and\r\nthe European Research Council under Grant No. 101087907 (ERC CoG QuHAMP)." article_number: '013141' article_processing_charge: Yes article_type: original arxiv: 1 author: - first_name: Sofya full_name: Agafonova, Sofya id: 09501ff6-dca7-11ea-a8ae-b3e0b9166e80 last_name: Agafonova orcid: 0000-0003-0582-2946 - first_name: Umang full_name: Mishra, Umang id: 4328fa4c-f128-11eb-9611-c107b0fe4d51 last_name: Mishra - first_name: Fritz R full_name: Diorico, Fritz R id: 2E054C4C-F248-11E8-B48F-1D18A9856A87 last_name: Diorico orcid: 0000-0002-4947-8924 - first_name: Onur full_name: Hosten, Onur id: 4C02D85E-F248-11E8-B48F-1D18A9856A87 last_name: Hosten orcid: 0000-0002-2031-204X citation: ama: Agafonova S, Mishra U, Diorico FR, Hosten O. Zigzag optical cavity for sensing and controlling torsional motion. Physical Review Research. 2024;6(1). doi:10.1103/physrevresearch.6.013141 apa: Agafonova, S., Mishra, U., Diorico, F. R., & Hosten, O. (2024). Zigzag optical cavity for sensing and controlling torsional motion. Physical Review Research. American Physical Society. https://doi.org/10.1103/physrevresearch.6.013141 chicago: Agafonova, Sofya, Umang Mishra, Fritz R Diorico, and Onur Hosten. “Zigzag Optical Cavity for Sensing and Controlling Torsional Motion.” Physical Review Research. American Physical Society, 2024. https://doi.org/10.1103/physrevresearch.6.013141. ieee: S. Agafonova, U. Mishra, F. R. Diorico, and O. Hosten, “Zigzag optical cavity for sensing and controlling torsional motion,” Physical Review Research, vol. 6, no. 1. American Physical Society, 2024. ista: Agafonova S, Mishra U, Diorico FR, Hosten O. 2024. Zigzag optical cavity for sensing and controlling torsional motion. Physical Review Research. 6(1), 013141. mla: Agafonova, Sofya, et al. “Zigzag Optical Cavity for Sensing and Controlling Torsional Motion.” Physical Review Research, vol. 6, no. 1, 013141, American Physical Society, 2024, doi:10.1103/physrevresearch.6.013141. short: S. Agafonova, U. Mishra, F.R. Diorico, O. Hosten, Physical Review Research 6 (2024). corr_author: '1' date_created: 2024-02-12T11:42:18Z date_published: 2024-02-05T00:00:00Z date_updated: 2025-05-08T09:34:07Z day: '05' ddc: - '530' department: - _id: OnHo doi: 10.1103/physrevresearch.6.013141 external_id: arxiv: - '2306.12804' file: - access_level: open_access checksum: 3a39ebffb24c1cc1dd0b547a726dc52d content_type: application/pdf creator: dernst date_created: 2024-02-12T11:46:50Z date_updated: 2024-02-12T11:46:50Z file_id: '14981' file_name: 2024_PhysicalRevResearch_Agafonova.pdf file_size: 1437167 relation: main_file success: 1 file_date_updated: 2024-02-12T11:46:50Z has_accepted_license: '1' intvolume: ' 6' issue: '1' language: - iso: eng month: '02' oa: 1 oa_version: Published Version project: - _id: bdb2a702-d553-11ed-ba76-f12e3e5a3bc6 grant_number: '101087907' name: 'A quantum hybrid of atoms and milligram-scale pendulums: towards gravitational quantum mechanics' publication: Physical Review Research publication_identifier: eissn: - 2643-1564 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Zigzag optical cavity for sensing and controlling torsional motion tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 6 year: '2024' ... --- OA_place: publisher _id: '17225' abstract: - lang: eng text: "This thesis describes the development of an atom interferometer designed to exploit the\r\nadvantages of utilizing quantum entanglement for enhanced precision measurements beyond\r\nthe standard quantum limit. While the project remains ongoing, significant progress has been\r\nmade.\r\nA key contribution of this work is the development of Quantrol, an experimental control\r\nsystem leveraging the ARTIQ framework. This software enables precise timing and control\r\nwithout requiring prior knowledge of ARTIQ’s implementation details or coding experience.\r\nThe interface offers user friendly visual comprehension of the experimental sequence and\r\nextended capabilities, allowing researchers to scan variables with a simple click of a mouse.\r\nThe main proposed project is to implement atom interferometric sequence with squeezed input\r\nstates inside of a dipole trap generated by a high finesse cavity. The presence of the dipole\r\ntrap allows one dimensional atomic cloud split while maintaining relatively strong confinement\r\nin other directions.\r\nWe are currently able to trap and cool 87Rb atoms to few micro kelvin temperatures, load\r\nthem into the dipole trap and state prepare them to be used for squeezing and interferometric\r\nsequence." alternative_title: - ISTA Thesis article_processing_charge: No author: - first_name: Vyacheslav full_name: Li, Vyacheslav id: 3A4FAA92-F248-11E8-B48F-1D18A9856A87 last_name: Li citation: ama: Li V. Towards a quantum entanglement enhanced atom interferomter. 2024. doi:10.15479/at:ista:17225 apa: Li, V. (2024). Towards a quantum entanglement enhanced atom interferomter. Institute of Science and Technology Austria. https://doi.org/10.15479/at:ista:17225 chicago: Li, Vyacheslav. “Towards a Quantum Entanglement Enhanced Atom Interferomter.” Institute of Science and Technology Austria, 2024. https://doi.org/10.15479/at:ista:17225. ieee: V. Li, “Towards a quantum entanglement enhanced atom interferomter,” Institute of Science and Technology Austria, 2024. ista: Li V. 2024. Towards a quantum entanglement enhanced atom interferomter. Institute of Science and Technology Austria. mla: Li, Vyacheslav. Towards a Quantum Entanglement Enhanced Atom Interferomter. Institute of Science and Technology Austria, 2024, doi:10.15479/at:ista:17225. short: V. Li, Towards a Quantum Entanglement Enhanced Atom Interferomter, Institute of Science and Technology Austria, 2024. corr_author: '1' date_created: 2024-07-11T09:46:48Z date_published: 2024-07-11T00:00:00Z date_updated: 2026-04-07T12:42:28Z day: '11' ddc: - '530' degree_awarded: PhD department: - _id: GradSch - _id: OnHo doi: 10.15479/at:ista:17225 file: - access_level: open_access checksum: 15b2dbe8d2c9ed7ca5dd413827928077 content_type: application/pdf creator: vli date_created: 2024-07-11T10:26:22Z date_updated: 2024-07-11T10:26:22Z file_id: '17228' file_name: PhD_Thesis_Vyacheslav_Li_no_signatures_PDFA.pdf file_size: 6729761 relation: main_file success: 1 - access_level: closed checksum: 16e904a11d8d0ebb167cb654ddfc7fe5 content_type: application/x-zip-compressed creator: vli date_created: 2024-07-11T10:26:22Z date_updated: 2024-07-11T10:26:22Z file_id: '17229' file_name: PhD Thesis Vyacheslav Li.zip file_size: 9542859 relation: source_file file_date_updated: 2024-07-11T10:26:22Z has_accepted_license: '1' language: - iso: eng month: '07' oa: 1 oa_version: Published Version page: '79' project: - _id: bdb2a702-d553-11ed-ba76-f12e3e5a3bc6 grant_number: '101087907' name: 'A quantum hybrid of atoms and milligram-scale pendulums: towards gravitational quantum mechanics' publication_identifier: issn: - 2663-337X publication_status: published publisher: Institute of Science and Technology Austria related_material: record: - id: '11438' relation: part_of_dissertation status: public status: public supervisor: - first_name: Onur full_name: Hosten, Onur id: 4C02D85E-F248-11E8-B48F-1D18A9856A87 last_name: Hosten orcid: 0000-0002-2031-204X title: Towards a quantum entanglement enhanced atom interferomter tmp: image: /images/cc_by_nc_sa.png legal_code_url: https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode name: Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) short: CC BY-NC-SA (4.0) type: dissertation user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd year: '2024' ... --- _id: '13233' abstract: - lang: eng text: We study the impact of finite-range physics on the zero-range-model analysis of three-body recombination in ultracold atoms. We find that temperature dependence of the zero-range parameters can vary from one set of measurements to another as it may be driven by the distribution of error bars in the experiment, and not by the underlying three-body physics. To study finite-temperature effects in three-body recombination beyond the zero-range physics, we introduce and examine a finite-range model based upon a hyperspherical formalism. The systematic error discussed in this Letter may provide a significant contribution to the error bars of measured three-body parameters. acknowledgement: We thank Jan Arlt, Hans-Werner Hammer, and Karsten Riisager for useful discussions. M.L. acknowledges support by the European Research Council (ERC) Starting Grant No. 801770 (ANGULON). article_number: L061304 article_processing_charge: No article_type: letter_note arxiv: 1 author: - first_name: Sofya full_name: Agafonova, Sofya id: 09501ff6-dca7-11ea-a8ae-b3e0b9166e80 last_name: Agafonova orcid: 0000-0003-0582-2946 - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 - first_name: Artem full_name: Volosniev, Artem id: 37D278BC-F248-11E8-B48F-1D18A9856A87 last_name: Volosniev orcid: 0000-0003-0393-5525 citation: ama: Agafonova S, Lemeshko M, Volosniev A. Finite-range bias in fitting three-body loss to the zero-range model. Physical Review A. 2023;107(6). doi:10.1103/PhysRevA.107.L061304 apa: Agafonova, S., Lemeshko, M., & Volosniev, A. (2023). Finite-range bias in fitting three-body loss to the zero-range model. Physical Review A. American Physical Society. https://doi.org/10.1103/PhysRevA.107.L061304 chicago: Agafonova, Sofya, Mikhail Lemeshko, and Artem Volosniev. “Finite-Range Bias in Fitting Three-Body Loss to the Zero-Range Model.” Physical Review A. American Physical Society, 2023. https://doi.org/10.1103/PhysRevA.107.L061304. ieee: S. Agafonova, M. Lemeshko, and A. Volosniev, “Finite-range bias in fitting three-body loss to the zero-range model,” Physical Review A, vol. 107, no. 6. American Physical Society, 2023. ista: Agafonova S, Lemeshko M, Volosniev A. 2023. Finite-range bias in fitting three-body loss to the zero-range model. Physical Review A. 107(6), L061304. mla: Agafonova, Sofya, et al. “Finite-Range Bias in Fitting Three-Body Loss to the Zero-Range Model.” Physical Review A, vol. 107, no. 6, L061304, American Physical Society, 2023, doi:10.1103/PhysRevA.107.L061304. short: S. Agafonova, M. Lemeshko, A. Volosniev, Physical Review A 107 (2023). corr_author: '1' date_created: 2023-07-16T22:01:10Z date_published: 2023-06-20T00:00:00Z date_updated: 2025-04-14T07:48:53Z day: '20' department: - _id: MiLe - _id: OnHo doi: 10.1103/PhysRevA.107.L061304 ec_funded: 1 external_id: arxiv: - '2302.01022' isi: - '001019748000005' intvolume: ' 107' isi: 1 issue: '6' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.48550/arXiv.2302.01022 month: '06' oa: 1 oa_version: Preprint project: - _id: 2688CF98-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '801770' name: 'Angulon: physics and applications of a new quasiparticle' publication: Physical Review A publication_identifier: eissn: - 2469-9934 issn: - 2469-9926 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Finite-range bias in fitting three-body loss to the zero-range model type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 107 year: '2023' ... --- _id: '14749' abstract: - lang: eng text: We unveil a powerful method for the stabilization of laser injection locking based on sensing variations in the output beam ellipticity of an optically seeded laser. The effect arises due to an interference between the seeding beam and the injected laser output. We demonstrate the method for a commercial semiconductor laser without the need for any internal changes to the readily operational injection locked laser system that was used. The method can also be used to increase the mode-hop free tuning range of lasers, and has the potential to fill a void in the low-noise laser industry. article_processing_charge: No article_type: original arxiv: 1 author: - first_name: Umang full_name: Mishra, Umang id: 4328fa4c-f128-11eb-9611-c107b0fe4d51 last_name: Mishra - first_name: Vyacheslav full_name: Li, Vyacheslav id: 3A4FAA92-F248-11E8-B48F-1D18A9856A87 last_name: Li - first_name: Sebastian full_name: Wald, Sebastian id: 133F200A-B015-11E9-AD41-0EDAE5697425 last_name: Wald orcid: 0000-0002-5869-1604 - first_name: Sofya full_name: Agafonova, Sofya id: 09501ff6-dca7-11ea-a8ae-b3e0b9166e80 last_name: Agafonova orcid: 0000-0003-0582-2946 - first_name: Fritz R full_name: Diorico, Fritz R id: 2E054C4C-F248-11E8-B48F-1D18A9856A87 last_name: Diorico orcid: 0000-0002-4947-8924 - first_name: Onur full_name: Hosten, Onur id: 4C02D85E-F248-11E8-B48F-1D18A9856A87 last_name: Hosten orcid: 0000-0002-2031-204X citation: ama: Mishra U, Li V, Wald S, Agafonova S, Diorico FR, Hosten O. Monitoring and active stabilization of laser injection locking using beam ellipticity. Optics Letters. 2023;48(15):3973-3976. doi:10.1364/ol.495553 apa: Mishra, U., Li, V., Wald, S., Agafonova, S., Diorico, F. R., & Hosten, O. (2023). Monitoring and active stabilization of laser injection locking using beam ellipticity. Optics Letters. Optica Publishing Group. https://doi.org/10.1364/ol.495553 chicago: Mishra, Umang, Vyacheslav Li, Sebastian Wald, Sofya Agafonova, Fritz R Diorico, and Onur Hosten. “Monitoring and Active Stabilization of Laser Injection Locking Using Beam Ellipticity.” Optics Letters. Optica Publishing Group, 2023. https://doi.org/10.1364/ol.495553. ieee: U. Mishra, V. Li, S. Wald, S. Agafonova, F. R. Diorico, and O. Hosten, “Monitoring and active stabilization of laser injection locking using beam ellipticity,” Optics Letters, vol. 48, no. 15. Optica Publishing Group, pp. 3973–3976, 2023. ista: Mishra U, Li V, Wald S, Agafonova S, Diorico FR, Hosten O. 2023. Monitoring and active stabilization of laser injection locking using beam ellipticity. Optics Letters. 48(15), 3973–3976. mla: Mishra, Umang, et al. “Monitoring and Active Stabilization of Laser Injection Locking Using Beam Ellipticity.” Optics Letters, vol. 48, no. 15, Optica Publishing Group, 2023, pp. 3973–76, doi:10.1364/ol.495553. short: U. Mishra, V. Li, S. Wald, S. Agafonova, F.R. Diorico, O. Hosten, Optics Letters 48 (2023) 3973–3976. corr_author: '1' date_created: 2024-01-08T13:01:46Z date_published: 2023-07-21T00:00:00Z date_updated: 2025-12-16T12:52:55Z day: '21' department: - _id: OnHo doi: 10.1364/ol.495553 external_id: arxiv: - '2212.01266' isi: - '001051044600008' intvolume: ' 48' isi: 1 issue: '15' keyword: - Atomic and Molecular Physics - and Optics language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.48550/arXiv.2212.01266 month: '07' oa: 1 oa_version: Preprint page: 3973-3976 publication: Optics Letters publication_identifier: eissn: - 1539-4794 issn: - 0146-9592 publication_status: published publisher: Optica Publishing Group quality_controlled: '1' scopus_import: '1' status: public title: Monitoring and active stabilization of laser injection locking using beam ellipticity type: journal_article user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345 volume: 48 year: '2023' ... --- _id: '14759' abstract: - lang: eng text: "Proper operation of electro-optic I/Q modulators relies on precise adjustment and control of the relative phase biases between the modulator’s internal interferometer arms. We present an all-analog phase bias locking scheme where error signals are obtained from the beat between the optical carrier and optical tones generated by an auxiliary 2 MHz \U0001D445\U0001D439 tone to lock the phases of all three involved interferometers for operation up to 10 GHz. With the developed method, we demonstrate an I/Q modulator in carrier-suppressed single-sideband mode, where the suppressed carrier and sideband are locked at optical power levels <−27dB\r\n relative to the transmitted sideband. We describe a simple analytical model for calculating the error signals and detail the implementation of the electronic circuitry for the implementation of the method." acknowledgement: We thank Jakob Vorlaufer for technical contributions and Vyacheslav Li and Sofia Agafonova for comments on the manuscript. article_processing_charge: No article_type: original arxiv: 1 author: - first_name: Sebastian full_name: Wald, Sebastian id: 133F200A-B015-11E9-AD41-0EDAE5697425 last_name: Wald orcid: 0000-0002-5869-1604 - first_name: Fritz R full_name: Diorico, Fritz R id: 2E054C4C-F248-11E8-B48F-1D18A9856A87 last_name: Diorico orcid: 0000-0002-4947-8924 - first_name: Onur full_name: Hosten, Onur id: 4C02D85E-F248-11E8-B48F-1D18A9856A87 last_name: Hosten orcid: 0000-0002-2031-204X citation: ama: Wald S, Diorico FR, Hosten O. Analog stabilization of an electro-optic I/Q modulator with an auxiliary modulation tone. Applied Optics. 2023;62(1):1-7. doi:10.1364/ao.474118 apa: Wald, S., Diorico, F. R., & Hosten, O. (2023). Analog stabilization of an electro-optic I/Q modulator with an auxiliary modulation tone. Applied Optics. Optica Publishing Group. https://doi.org/10.1364/ao.474118 chicago: Wald, Sebastian, Fritz R Diorico, and Onur Hosten. “Analog Stabilization of an Electro-Optic I/Q Modulator with an Auxiliary Modulation Tone.” Applied Optics. Optica Publishing Group, 2023. https://doi.org/10.1364/ao.474118. ieee: S. Wald, F. R. Diorico, and O. Hosten, “Analog stabilization of an electro-optic I/Q modulator with an auxiliary modulation tone,” Applied Optics, vol. 62, no. 1. Optica Publishing Group, pp. 1–7, 2023. ista: Wald S, Diorico FR, Hosten O. 2023. Analog stabilization of an electro-optic I/Q modulator with an auxiliary modulation tone. Applied Optics. 62(1), 1–7. mla: Wald, Sebastian, et al. “Analog Stabilization of an Electro-Optic I/Q Modulator with an Auxiliary Modulation Tone.” Applied Optics, vol. 62, no. 1, Optica Publishing Group, 2023, pp. 1–7, doi:10.1364/ao.474118. short: S. Wald, F.R. Diorico, O. Hosten, Applied Optics 62 (2023) 1–7. corr_author: '1' date_created: 2024-01-08T13:19:14Z date_published: 2023-01-01T00:00:00Z date_updated: 2026-04-07T12:35:11Z day: '01' department: - _id: OnHo doi: 10.1364/ao.474118 external_id: arxiv: - '2208.11591' isi: - '000906607900001' intvolume: ' 62' isi: 1 issue: '1' keyword: - Atomic and Molecular Physics - and Optics - Engineering (miscellaneous) - Electrical and Electronic Engineering language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.48550/arXiv.2208.11591 month: '01' oa: 1 oa_version: Preprint page: 1-7 publication: Applied Optics publication_identifier: eissn: - 2155-3165 issn: - 1559-128X publication_status: published publisher: Optica Publishing Group quality_controlled: '1' related_material: record: - id: '20798' relation: dissertation_contains status: public scopus_import: '1' status: public title: Analog stabilization of an electro-optic I/Q modulator with an auxiliary modulation tone type: journal_article user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345 volume: 62 year: '2023' ... --- _id: '13264' abstract: - lang: eng text: "We build a parametric amplifier with a Josephson field-effect transistor (JoFET) as the active element. The resonant frequency of the device is field-effect tunable over a range of 2 GHz. The JoFET amplifier has 20 dB of gain, 4 MHz of instantaneous bandwidth, and a 1-dB compression point of -125.5 dBm when operated at a fixed resonance frequency.\r\n\r\n" acknowledged_ssus: - _id: NanoFab - _id: M-Shop acknowledgement: We thank Shyam Shankar for helpful feedback on the manuscript. We gratefully acknowledge the support of the ISTA nanofabrication facility, the Miba Machine Shop, and the eMachine Shop. The NYU team acknowledges support from Army Research Office Grant No. W911NF2110303. article_number: '064032' article_processing_charge: No article_type: original arxiv: 1 author: - first_name: Duc T full_name: Phan, Duc T id: 29C8C0B4-F248-11E8-B48F-1D18A9856A87 last_name: Phan - first_name: Paul full_name: Falthansl-Scheinecker, Paul id: 85b43b21-15b2-11ec-abd3-e2c252cc2285 last_name: Falthansl-Scheinecker - first_name: Umang full_name: Mishra, Umang id: 4328fa4c-f128-11eb-9611-c107b0fe4d51 last_name: Mishra - first_name: W. M. full_name: Strickland, W. M. last_name: Strickland - first_name: D. full_name: Langone, D. last_name: Langone - first_name: J. full_name: Shabani, J. last_name: Shabani - first_name: Andrew P full_name: Higginbotham, Andrew P id: 4AD6785A-F248-11E8-B48F-1D18A9856A87 last_name: Higginbotham orcid: 0000-0003-2607-2363 citation: ama: Phan DT, Falthansl-Scheinecker P, Mishra U, et al. Gate-tunable superconductor-semiconductor parametric amplifier. Physical Review Applied. 2023;19(6). doi:10.1103/PhysRevApplied.19.064032 apa: Phan, D. T., Falthansl-Scheinecker, P., Mishra, U., Strickland, W. M., Langone, D., Shabani, J., & Higginbotham, A. P. (2023). Gate-tunable superconductor-semiconductor parametric amplifier. Physical Review Applied. American Physical Society. https://doi.org/10.1103/PhysRevApplied.19.064032 chicago: Phan, Duc T, Paul Falthansl-Scheinecker, Umang Mishra, W. M. Strickland, D. Langone, J. Shabani, and Andrew P Higginbotham. “Gate-Tunable Superconductor-Semiconductor Parametric Amplifier.” Physical Review Applied. American Physical Society, 2023. https://doi.org/10.1103/PhysRevApplied.19.064032. ieee: D. T. Phan et al., “Gate-tunable superconductor-semiconductor parametric amplifier,” Physical Review Applied, vol. 19, no. 6. American Physical Society, 2023. ista: Phan DT, Falthansl-Scheinecker P, Mishra U, Strickland WM, Langone D, Shabani J, Higginbotham AP. 2023. Gate-tunable superconductor-semiconductor parametric amplifier. Physical Review Applied. 19(6), 064032. mla: Phan, Duc T., et al. “Gate-Tunable Superconductor-Semiconductor Parametric Amplifier.” Physical Review Applied, vol. 19, no. 6, 064032, American Physical Society, 2023, doi:10.1103/PhysRevApplied.19.064032. short: D.T. Phan, P. Falthansl-Scheinecker, U. Mishra, W.M. Strickland, D. Langone, J. Shabani, A.P. Higginbotham, Physical Review Applied 19 (2023). corr_author: '1' date_created: 2023-07-23T22:01:12Z date_published: 2023-06-09T00:00:00Z date_updated: 2026-04-07T13:25:51Z day: '09' department: - _id: AnHi - _id: OnHo doi: 10.1103/PhysRevApplied.19.064032 external_id: arxiv: - '2206.05746' isi: - '001012022600004' intvolume: ' 19' isi: 1 issue: '6' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/2206.05746 month: '06' oa: 1 oa_version: Preprint publication: Physical Review Applied publication_identifier: eissn: - 2331-7019 publication_status: published publisher: American Physical Society quality_controlled: '1' related_material: record: - id: '14547' relation: dissertation_contains status: public scopus_import: '1' status: public title: Gate-tunable superconductor-semiconductor parametric amplifier type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 19 year: '2023' ... --- _id: '10652' abstract: - lang: eng text: Finding a feasible scheme for testing the quantum mechanical nature of the gravitational interaction has been attracting an increasing level of attention. Gravity mediated entanglement generation so far appears to be the key ingredient for a potential experiment. In a recent proposal [D. Carney et al., PRX Quantum 2, 030330 (2021)] combining an atom interferometer with a low-frequency mechanical oscillator, a coherence revival test is proposed for verifying this entanglement generation. With measurements performed only on the atoms, this protocol bypasses the need for correlation measurements. Here, we explore formulations of such a protocol, and specifically find that in the envisioned regime of operation with high thermal excitation, semiclassical models, where there is no concept of entanglement, also give the same experimental signatures. We elucidate in a fully quantum mechanical calculation that entanglement is not the source of the revivals in the relevant parameter regime. We argue that, in its current form, the suggested test is only relevant if the oscillator is nearly in a pure quantum state, and in this regime the effects are too small to be measurable. We further discuss potential open ends. The results highlight the importance and subtleties of explicitly considering how the quantum case differs from the classical expectations when testing for the quantum mechanical nature of a physical system. acknowledgement: O.H. is supported by Institute of Science and Technology Austria. The author thanks Jess Riedel for discussions. article_number: '013023' article_processing_charge: Yes (via OA deal) article_type: original author: - first_name: Onur full_name: Hosten, Onur id: 4C02D85E-F248-11E8-B48F-1D18A9856A87 last_name: Hosten orcid: 0000-0002-2031-204X citation: ama: Hosten O. Constraints on probing quantum coherence to infer gravitational entanglement. Physical Review Research. 2022;4(1). doi:10.1103/PhysRevResearch.4.013023 apa: Hosten, O. (2022). Constraints on probing quantum coherence to infer gravitational entanglement. Physical Review Research. American Physical Society. https://doi.org/10.1103/PhysRevResearch.4.013023 chicago: Hosten, Onur. “Constraints on Probing Quantum Coherence to Infer Gravitational Entanglement.” Physical Review Research. American Physical Society, 2022. https://doi.org/10.1103/PhysRevResearch.4.013023. ieee: O. Hosten, “Constraints on probing quantum coherence to infer gravitational entanglement,” Physical Review Research, vol. 4, no. 1. American Physical Society, 2022. ista: Hosten O. 2022. Constraints on probing quantum coherence to infer gravitational entanglement. Physical Review Research. 4(1), 013023. mla: Hosten, Onur. “Constraints on Probing Quantum Coherence to Infer Gravitational Entanglement.” Physical Review Research, vol. 4, no. 1, 013023, American Physical Society, 2022, doi:10.1103/PhysRevResearch.4.013023. short: O. Hosten, Physical Review Research 4 (2022). corr_author: '1' date_created: 2022-01-23T23:01:27Z date_published: 2022-01-10T00:00:00Z date_updated: 2024-10-09T21:01:26Z day: '10' ddc: - '530' department: - _id: OnHo doi: 10.1103/PhysRevResearch.4.013023 file: - access_level: open_access checksum: 7254d267a0633ca5d63131d345e58686 content_type: application/pdf creator: cchlebak date_created: 2022-01-24T11:12:44Z date_updated: 2022-01-24T11:12:44Z file_id: '10660' file_name: 2022_PhysRevResearch_Hosten.pdf file_size: 236329 relation: main_file success: 1 file_date_updated: 2022-01-24T11:12:44Z has_accepted_license: '1' intvolume: ' 4' issue: '1' language: - iso: eng month: '01' oa: 1 oa_version: Published Version publication: Physical Review Research publication_identifier: issn: - 2643-1564 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Constraints on probing quantum coherence to infer gravitational entanglement tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 4 year: '2022' ... --- _id: '11438' abstract: - lang: eng text: Lasers with well-controlled relative frequencies are indispensable for many applications in science and technology. We present a frequency-offset locking method for lasers based on beat-frequency discrimination utilizing hybrid electronic LC filters. The method is specifically designed for decoupling the tightness of the lock from the broadness of its capture range. The presented demonstration locks two free-running diode lasers at 780 nm with a 5.5-GHz offset. It displays an offset frequency instability below 55 Hz for time scales in excess of 1000 s and a minimum of 12 Hz at 10-s averaging. The performance is complemented with a 190-MHz lock-capture range, a tuning range of up to 1 GHz, and a frequency ramp agility of 200kHz/μs. acknowledgement: This work was supported by IST Austria. The authors thank Yueheng Shi for technical contributions. article_number: '054031' article_processing_charge: No article_type: original arxiv: 1 author: - first_name: Vyacheslav full_name: Li, Vyacheslav id: 3A4FAA92-F248-11E8-B48F-1D18A9856A87 last_name: Li - first_name: Fritz R full_name: Diorico, Fritz R id: 2E054C4C-F248-11E8-B48F-1D18A9856A87 last_name: Diorico orcid: 0000-0002-4947-8924 - first_name: Onur full_name: Hosten, Onur id: 4C02D85E-F248-11E8-B48F-1D18A9856A87 last_name: Hosten orcid: 0000-0002-2031-204X citation: ama: Li V, Diorico FR, Hosten O. Laser frequency-offset locking at 10-Hz-level instability using hybrid electronic filters. Physical Review Applied. 2022;17(5). doi:10.1103/physrevapplied.17.054031 apa: Li, V., Diorico, F. R., & Hosten, O. (2022). Laser frequency-offset locking at 10-Hz-level instability using hybrid electronic filters. Physical Review Applied. American Physical Society. https://doi.org/10.1103/physrevapplied.17.054031 chicago: Li, Vyacheslav, Fritz R Diorico, and Onur Hosten. “Laser Frequency-Offset Locking at 10-Hz-Level Instability Using Hybrid Electronic Filters.” Physical Review Applied. American Physical Society, 2022. https://doi.org/10.1103/physrevapplied.17.054031. ieee: V. Li, F. R. Diorico, and O. Hosten, “Laser frequency-offset locking at 10-Hz-level instability using hybrid electronic filters,” Physical Review Applied, vol. 17, no. 5. American Physical Society, 2022. ista: Li V, Diorico FR, Hosten O. 2022. Laser frequency-offset locking at 10-Hz-level instability using hybrid electronic filters. Physical Review Applied. 17(5), 054031. mla: Li, Vyacheslav, et al. “Laser Frequency-Offset Locking at 10-Hz-Level Instability Using Hybrid Electronic Filters.” Physical Review Applied, vol. 17, no. 5, 054031, American Physical Society, 2022, doi:10.1103/physrevapplied.17.054031. short: V. Li, F.R. Diorico, O. Hosten, Physical Review Applied 17 (2022). corr_author: '1' date_created: 2022-06-07T08:07:59Z date_published: 2022-05-19T00:00:00Z date_updated: 2026-04-07T12:42:28Z day: '19' department: - _id: GradSch - _id: OnHo doi: 10.1103/physrevapplied.17.054031 external_id: arxiv: - '2111.13194' isi: - '000880670300001' intvolume: ' 17' isi: 1 issue: '5' keyword: - General Physics and Astronomy language: - iso: eng main_file_link: - open_access: '1' url: ' https://doi.org/10.48550/arXiv.2111.13194' month: '05' oa: 1 oa_version: Preprint publication: Physical Review Applied publication_identifier: issn: - 2331-7019 publication_status: published publisher: American Physical Society quality_controlled: '1' related_material: record: - id: '17225' relation: dissertation_contains status: public scopus_import: '1' status: public title: Laser frequency-offset locking at 10-Hz-level instability using hybrid electronic filters type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 17 year: '2022' ... --- _id: '9331' abstract: - lang: eng text: 'Quantum entanglement has been generated and verified in cold-atom experiments and used to make atom-interferometric measurements below the shot-noise limit. However, current state-of-the-art cold-atom devices exploit separable (i.e., unentangled) atomic states. This perspective piece asks the question: can entanglement usefully improve cold-atom sensors, in the sense that it gives new sensing capabilities unachievable with current state-of-the-art devices? We briefly review the state-of-the-art in precision cold-atom sensing, focusing on clocks and inertial sensors, identifying the potential benefits entanglement could bring to these devices, and the challenges that need to be overcome to realize these benefits. We survey demonstrated methods of generating metrologically useful entanglement in cold-atom systems, note their relative strengths and weaknesses, and assess their prospects for near-to-medium term quantum-enhanced cold-atom sensing.' acknowledgement: We acknowledge fruitful discussions with John Close, Chris Freier, Kyle Hardman, Joseph Hope, and Paul Wigley, and insightful suggestions made by Franck Pereira dos Santos on behalf of the Atom Interferometry and Inertial Sensors team at SYRTE. S.S.S. was supported by an Australian Research Council Discovery Early Career Researcher Award (DECRA), Project No. DE200100495. O.H. was supported by IST Austria. article_number: '140501' article_processing_charge: No article_type: original arxiv: 1 author: - first_name: Stuart S. full_name: Szigeti, Stuart S. last_name: Szigeti - first_name: Onur full_name: Hosten, Onur id: 4C02D85E-F248-11E8-B48F-1D18A9856A87 last_name: Hosten orcid: 0000-0002-2031-204X - first_name: Simon A. full_name: Haine, Simon A. last_name: Haine citation: ama: 'Szigeti SS, Hosten O, Haine SA. Improving cold-atom sensors with quantum entanglement: Prospects and challenges. Applied Physics Letters. 2021;118(14). doi:10.1063/5.0050235' apa: 'Szigeti, S. S., Hosten, O., & Haine, S. A. (2021). Improving cold-atom sensors with quantum entanglement: Prospects and challenges. Applied Physics Letters. AIP Publishing. https://doi.org/10.1063/5.0050235' chicago: 'Szigeti, Stuart S., Onur Hosten, and Simon A. Haine. “Improving Cold-Atom Sensors with Quantum Entanglement: Prospects and Challenges.” Applied Physics Letters. AIP Publishing, 2021. https://doi.org/10.1063/5.0050235.' ieee: 'S. S. Szigeti, O. Hosten, and S. A. Haine, “Improving cold-atom sensors with quantum entanglement: Prospects and challenges,” Applied Physics Letters, vol. 118, no. 14. AIP Publishing, 2021.' ista: 'Szigeti SS, Hosten O, Haine SA. 2021. Improving cold-atom sensors with quantum entanglement: Prospects and challenges. Applied Physics Letters. 118(14), 140501.' mla: 'Szigeti, Stuart S., et al. “Improving Cold-Atom Sensors with Quantum Entanglement: Prospects and Challenges.” Applied Physics Letters, vol. 118, no. 14, 140501, AIP Publishing, 2021, doi:10.1063/5.0050235.' short: S.S. Szigeti, O. Hosten, S.A. Haine, Applied Physics Letters 118 (2021). corr_author: '1' date_created: 2021-04-18T22:01:40Z date_published: 2021-04-07T00:00:00Z date_updated: 2025-07-10T12:01:43Z day: '07' department: - _id: OnHo doi: 10.1063/5.0050235 external_id: arxiv: - '2010.09168' isi: - '000637702100001' intvolume: ' 118' isi: 1 issue: '14' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/2010.09168 month: '04' oa: 1 oa_version: Preprint publication: Applied Physics Letters publication_identifier: issn: - 0003-6951 publication_status: published publisher: AIP Publishing quality_controlled: '1' scopus_import: '1' status: public title: 'Improving cold-atom sensors with quantum entanglement: Prospects and challenges' type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 118 year: '2021' ... --- _id: '8285' abstract: - lang: eng text: We demonstrate the utility of optical cavity generated spin-squeezed states in free space atomic fountain clocks in ensembles of 390 000 87Rb atoms. Fluorescence imaging, correlated to an initial quantum nondemolition measurement, is used for population spectroscopy after the atoms are released from a confining lattice. For a free fall time of 4 milliseconds, we resolve a single-shot phase sensitivity of 814(61) microradians, which is 5.8(0.6) decibels (dB) below the quantum projection limit. We observe that this squeezing is preserved as the cloud expands to a roughly 200  μm radius and falls roughly 300  μm in free space. Ramsey spectroscopy with 240 000 atoms at a 3.6 ms Ramsey time results in a single-shot fractional frequency stability of 8.4(0.2)×10−12, 3.8(0.2) dB below the quantum projection limit. The sensitivity and stability are limited by the technical noise in the fluorescence detection protocol and the microwave system, respectively. acknowledgement: This work is supported by the Office of Naval Research (N00014-16-1-2927- A00003), Vannevar Bush Faculty Fellowship (N00014-16-1-2812- P00005), Department of Energy (DE-SC0019174- 0001), and Defense Threat Reduction Agency (HDTRA1-15-1-0017- P00005). article_number: '043202' article_processing_charge: No article_type: original arxiv: 1 author: - first_name: Benjamin K. full_name: Malia, Benjamin K. last_name: Malia - first_name: Julián full_name: Martínez-Rincón, Julián last_name: Martínez-Rincón - first_name: Yunfan full_name: Wu, Yunfan last_name: Wu - first_name: Onur full_name: Hosten, Onur id: 4C02D85E-F248-11E8-B48F-1D18A9856A87 last_name: Hosten orcid: 0000-0002-2031-204X - first_name: Mark A. full_name: Kasevich, Mark A. last_name: Kasevich citation: ama: Malia BK, Martínez-Rincón J, Wu Y, Hosten O, Kasevich MA. Free space Ramsey spectroscopy in rubidium with noise below the quantum projection limit. Physical Review Letters. 2020;125(4). doi:10.1103/PhysRevLett.125.043202 apa: Malia, B. K., Martínez-Rincón, J., Wu, Y., Hosten, O., & Kasevich, M. A. (2020). Free space Ramsey spectroscopy in rubidium with noise below the quantum projection limit. Physical Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.125.043202 chicago: Malia, Benjamin K., Julián Martínez-Rincón, Yunfan Wu, Onur Hosten, and Mark A. Kasevich. “Free Space Ramsey Spectroscopy in Rubidium with Noise below the Quantum Projection Limit.” Physical Review Letters. American Physical Society, 2020. https://doi.org/10.1103/PhysRevLett.125.043202. ieee: B. K. Malia, J. Martínez-Rincón, Y. Wu, O. Hosten, and M. A. Kasevich, “Free space Ramsey spectroscopy in rubidium with noise below the quantum projection limit,” Physical Review Letters, vol. 125, no. 4. American Physical Society, 2020. ista: Malia BK, Martínez-Rincón J, Wu Y, Hosten O, Kasevich MA. 2020. Free space Ramsey spectroscopy in rubidium with noise below the quantum projection limit. Physical Review Letters. 125(4), 043202. mla: Malia, Benjamin K., et al. “Free Space Ramsey Spectroscopy in Rubidium with Noise below the Quantum Projection Limit.” Physical Review Letters, vol. 125, no. 4, 043202, American Physical Society, 2020, doi:10.1103/PhysRevLett.125.043202. short: B.K. Malia, J. Martínez-Rincón, Y. Wu, O. Hosten, M.A. Kasevich, Physical Review Letters 125 (2020). date_created: 2020-08-24T06:24:04Z date_published: 2020-07-24T00:00:00Z date_updated: 2023-10-18T08:38:35Z day: '24' department: - _id: OnHo doi: 10.1103/PhysRevLett.125.043202 external_id: arxiv: - '1912.10218' isi: - '000552227400008' pmid: - '32794788' intvolume: ' 125' isi: 1 issue: '4' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1912.10218 month: '07' oa: 1 oa_version: Preprint pmid: 1 publication: Physical Review Letters publication_identifier: eissn: - 1079-7114 issn: - 0031-9007 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Free space Ramsey spectroscopy in rubidium with noise below the quantum projection limit type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 125 year: '2020' ... --- _id: '8319' abstract: - lang: eng text: We demonstrate that releasing atoms into free space from an optical lattice does not deteriorate cavity-generated spin squeezing for metrological purposes. In this work, an ensemble of 500000 spin-squeezed atoms in a high-finesse optical cavity with near-uniform atom-cavity coupling is prepared, released into free space, recaptured in the cavity, and probed. Up to ∼10 dB of metrologically relevant squeezing is retrieved for 700μs free-fall times, and decaying levels of squeezing are realized for up to 3 ms free-fall times. The degradation of squeezing results from loss of atom-cavity coupling homogeneity between the initial squeezed state generation and final collective state readout. A theoretical model is developed to quantify this degradation and this model is experimentally validated. acknowledgement: We thank N. Engelsen for comments on the manuscript. This work was supported by the Office of Naval Research, Vannevar Bush Faculty Fellowship, Department of Energy, and Defense Threat Reduction Agency. R.K. was partly supported by the AQT/INQNET program at Caltech. article_number: '012224' article_processing_charge: No article_type: original arxiv: 1 author: - first_name: Yunfan full_name: Wu, Yunfan last_name: Wu - first_name: Rajiv full_name: Krishnakumar, Rajiv last_name: Krishnakumar - first_name: Julián full_name: Martínez-Rincón, Julián last_name: Martínez-Rincón - first_name: Benjamin K. full_name: Malia, Benjamin K. last_name: Malia - first_name: Onur full_name: Hosten, Onur id: 4C02D85E-F248-11E8-B48F-1D18A9856A87 last_name: Hosten orcid: 0000-0002-2031-204X - first_name: Mark A. full_name: Kasevich, Mark A. last_name: Kasevich citation: ama: Wu Y, Krishnakumar R, Martínez-Rincón J, Malia BK, Hosten O, Kasevich MA. Retrieval of cavity-generated atomic spin squeezing after free-space release. Physical Review A. 2020;102(1). doi:10.1103/PhysRevA.102.012224 apa: Wu, Y., Krishnakumar, R., Martínez-Rincón, J., Malia, B. K., Hosten, O., & Kasevich, M. A. (2020). Retrieval of cavity-generated atomic spin squeezing after free-space release. Physical Review A. American Physical Society. https://doi.org/10.1103/PhysRevA.102.012224 chicago: Wu, Yunfan, Rajiv Krishnakumar, Julián Martínez-Rincón, Benjamin K. Malia, Onur Hosten, and Mark A. Kasevich. “Retrieval of Cavity-Generated Atomic Spin Squeezing after Free-Space Release.” Physical Review A. American Physical Society, 2020. https://doi.org/10.1103/PhysRevA.102.012224. ieee: Y. Wu, R. Krishnakumar, J. Martínez-Rincón, B. K. Malia, O. Hosten, and M. A. Kasevich, “Retrieval of cavity-generated atomic spin squeezing after free-space release,” Physical Review A, vol. 102, no. 1. American Physical Society, 2020. ista: Wu Y, Krishnakumar R, Martínez-Rincón J, Malia BK, Hosten O, Kasevich MA. 2020. Retrieval of cavity-generated atomic spin squeezing after free-space release. Physical Review A. 102(1), 012224. mla: Wu, Yunfan, et al. “Retrieval of Cavity-Generated Atomic Spin Squeezing after Free-Space Release.” Physical Review A, vol. 102, no. 1, 012224, American Physical Society, 2020, doi:10.1103/PhysRevA.102.012224. short: Y. Wu, R. Krishnakumar, J. Martínez-Rincón, B.K. Malia, O. Hosten, M.A. Kasevich, Physical Review A 102 (2020). date_created: 2020-08-30T22:01:10Z date_published: 2020-07-30T00:00:00Z date_updated: 2025-07-10T11:55:14Z day: '30' department: - _id: OnHo doi: 10.1103/PhysRevA.102.012224 external_id: arxiv: - '1912.08334' isi: - '000555104200011' intvolume: ' 102' isi: 1 issue: '1' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1912.08334 month: '07' oa: 1 oa_version: Preprint publication: Physical Review A publication_identifier: eissn: - 2469-9934 issn: - 2469-9926 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Retrieval of cavity-generated atomic spin squeezing after free-space release type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 102 year: '2020' ...