{"year":"2024","external_id":{"arxiv":["2403.02395"]},"volume":133,"doi":"10.1103/PhysRevLett.133.216601","related_material":{"record":[{"id":"17471","relation":"research_data","status":"public"}]},"oa":1,"OA_type":"green","article_number":"216601","acknowledgement":"F. Q. and C. H. L. acknowledge support from the QEP2.0 Grant from the Singapore National Research Foundation (Grant No. NRF2021-QEP2-02-P09) and the Singapore MOE Tier-II Grant (Grant No. MOE-T2EP50222-0003). J.-Y. D. and Z. P. acknowledge support by the Leverhulme Trust Research Leadership Award RL-2019-015. This project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie Grant Agreement No. 101034413. This research was supported in part by Grant No. NSF PHY-2309135 to the Kavli Institute for Theoretical Physics (KITP). We acknowledge the use of IBM Quantum services for this work. The views expressed are those of the authors and do not reflect the official policy or position of IBM or the IBM Quantum team.","month":"11","status":"public","main_file_link":[{"url":"https://doi.org/10.48550/arXiv.2403.02395","open_access":"1"}],"day":"22","department":[{"_id":"MaSe"}],"abstract":[{"text":"In contrast with extended Bloch waves, a single particle can become spatially localized due to the so-called skin effect originating from non-Hermitian pumping. Here we show that in kinetically constrained many-body systems, the skin effect can instead manifest as dynamical amplification within the Fock space, beyond the intuitively expected and previously studied particle localization and clustering. We exemplify this non-Hermitian Fock skin effect in an asymmetric version of the PXP model and show that it gives rise to ergodicity-breaking eigenstates—the non-Hermitian analogs of quantum many-body scars. A distinguishing feature of these non-Hermitian scars is their enhanced robustness against external disorders. We propose an experimental realization of the non-Hermitian scar enhancement in a tilted Bose-Hubbard optical lattice with laser-induced loss. Additionally, we implement digital simulations of such scar enhancement on the IBM quantum processor. Our results show that the Fock skin effect provides a powerful tool for creating robust nonergodic states in generic open quantum systems.","lang":"eng"}],"quality_controlled":"1","intvolume":"       133","title":"Enhanced many-body quantum scars from the non-hermitian fock skin effect","date_published":"2024-11-22T00:00:00Z","publisher":"American Physical Society","project":[{"grant_number":"101034413","name":"IST-BRIDGE: International postdoctoral program","_id":"fc2ed2f7-9c52-11eb-aca3-c01059dda49c","call_identifier":"H2020"}],"publication":"Physical Review Letters","language":[{"iso":"eng"}],"publication_status":"published","publication_identifier":{"eissn":["1079-7114"],"issn":["0031-9007"]},"author":[{"last_name":"Shen","first_name":"Ruizhe","full_name":"Shen, Ruizhe"},{"first_name":"Fang","full_name":"Qin, Fang","last_name":"Qin"},{"last_name":"Desaules","id":"6c292945-a610-11ed-9eec-c3be1ad62a80","full_name":"Desaules, Jean-Yves Marc","first_name":"Jean-Yves Marc","orcid":"0000-0002-3749-6375"},{"first_name":"Zlatko","full_name":"Papić, Zlatko","last_name":"Papić"},{"first_name":"Ching Hua","full_name":"Lee, Ching Hua","last_name":"Lee"}],"article_type":"original","arxiv":1,"date_created":"2024-12-08T23:01:55Z","type":"journal_article","scopus_import":"1","ec_funded":1,"date_updated":"2024-12-09T09:22:12Z","_id":"18627","citation":{"mla":"Shen, Ruizhe, et al. “Enhanced Many-Body Quantum Scars from the Non-Hermitian Fock Skin Effect.” <i>Physical Review Letters</i>, vol. 133, no. 21, 216601, American Physical Society, 2024, doi:<a href=\"https://doi.org/10.1103/PhysRevLett.133.216601\">10.1103/PhysRevLett.133.216601</a>.","apa":"Shen, R., Qin, F., Desaules, J.-Y. M., Papić, Z., &#38; Lee, C. H. (2024). Enhanced many-body quantum scars from the non-hermitian fock skin effect. <i>Physical Review Letters</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevLett.133.216601\">https://doi.org/10.1103/PhysRevLett.133.216601</a>","chicago":"Shen, Ruizhe, Fang Qin, Jean-Yves Marc Desaules, Zlatko Papić, and Ching Hua Lee. “Enhanced Many-Body Quantum Scars from the Non-Hermitian Fock Skin Effect.” <i>Physical Review Letters</i>. American Physical Society, 2024. <a href=\"https://doi.org/10.1103/PhysRevLett.133.216601\">https://doi.org/10.1103/PhysRevLett.133.216601</a>.","short":"R. Shen, F. Qin, J.-Y.M. Desaules, Z. Papić, C.H. Lee, Physical Review Letters 133 (2024).","ista":"Shen R, Qin F, Desaules J-YM, Papić Z, Lee CH. 2024. Enhanced many-body quantum scars from the non-hermitian fock skin effect. Physical Review Letters. 133(21), 216601.","ama":"Shen R, Qin F, Desaules J-YM, Papić Z, Lee CH. Enhanced many-body quantum scars from the non-hermitian fock skin effect. <i>Physical Review Letters</i>. 2024;133(21). doi:<a href=\"https://doi.org/10.1103/PhysRevLett.133.216601\">10.1103/PhysRevLett.133.216601</a>","ieee":"R. Shen, F. Qin, J.-Y. M. Desaules, Z. Papić, and C. H. Lee, “Enhanced many-body quantum scars from the non-hermitian fock skin effect,” <i>Physical Review Letters</i>, vol. 133, no. 21. American Physical Society, 2024."},"issue":"21","article_processing_charge":"No","oa_version":"Preprint","OA_place":"repository","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87"}