---
OA_place: repository
OA_type: green
_id: '21529'
abstract:
- lang: eng
text: 'A central challenge in the emerging field of free-electron quantum optics
is to achieve strong quantum interaction and single-photon nonlinearity between
a flying free electron and a photonic mode. Existing schemes are intrinsically
limited by electron diffraction, which puts an upper bound on the interaction
length and, therefore, on the strength of quantum coupling and nonlinearity. Here,
we propose “free-electron fibers”: effectively one-dimensional photonic systems
where free electrons copropagate with two guided modes. The first mode applies
a ponderomotive trap to the free electron, removing the limitations due to electron
diffraction. The second mode strongly couples to the guided free electron with
an enhanced coupling that is orders of magnitude larger than previous designs.
The extended interaction lengths enabled by our scheme allow for strong single-photon
nonlinearities mediated by free electrons. We predict novel quantum effects in
our system such as deterministic single-photon emission and nonlinear multimode
dynamics. Our proposal paves the way toward the realization of heralded macroscopic
nonclassical light generation, deterministic single-photon sources, and quantum
gates controlled by free-electron–photon interactions.'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Aviv
full_name: Karnieli, Aviv
last_name: Karnieli
- first_name: Charles
full_name: Roques-Carmes, Charles
id: e2e68fc9-6505-11ef-a541-eb4e72cc3e82
last_name: Roques-Carmes
- first_name: Nicholas
full_name: Rivera, Nicholas
last_name: Rivera
- first_name: Shanhui
full_name: Fan, Shanhui
last_name: Fan
citation:
ama: Karnieli A, Roques-Carmes C, Rivera N, Fan S. Strong coupling and single-photon
nonlinearity in free-electron quantum optics. ACS Photonics. 2024;11(8):3401-3411.
doi:10.1021/acsphotonics.4c00908
apa: Karnieli, A., Roques-Carmes, C., Rivera, N., & Fan, S. (2024). Strong coupling
and single-photon nonlinearity in free-electron quantum optics. ACS Photonics.
American Chemical Society. https://doi.org/10.1021/acsphotonics.4c00908
chicago: Karnieli, Aviv, Charles Roques-Carmes, Nicholas Rivera, and Shanhui Fan.
“Strong Coupling and Single-Photon Nonlinearity in Free-Electron Quantum Optics.”
ACS Photonics. American Chemical Society, 2024. https://doi.org/10.1021/acsphotonics.4c00908.
ieee: A. Karnieli, C. Roques-Carmes, N. Rivera, and S. Fan, “Strong coupling and
single-photon nonlinearity in free-electron quantum optics,” ACS Photonics,
vol. 11, no. 8. American Chemical Society, pp. 3401–3411, 2024.
ista: Karnieli A, Roques-Carmes C, Rivera N, Fan S. 2024. Strong coupling and single-photon
nonlinearity in free-electron quantum optics. ACS Photonics. 11(8), 3401–3411.
mla: Karnieli, Aviv, et al. “Strong Coupling and Single-Photon Nonlinearity in Free-Electron
Quantum Optics.” ACS Photonics, vol. 11, no. 8, American Chemical Society,
2024, pp. 3401–11, doi:10.1021/acsphotonics.4c00908.
short: A. Karnieli, C. Roques-Carmes, N. Rivera, S. Fan, ACS Photonics 11 (2024)
3401–3411.
date_created: 2026-03-30T12:22:47Z
date_published: 2024-07-29T00:00:00Z
date_updated: 2026-04-27T10:30:37Z
day: '29'
ddc:
- '530'
doi: 10.1021/acsphotonics.4c00908
extern: '1'
external_id:
arxiv:
- '2403.13071'
intvolume: ' 11'
issue: '8'
keyword:
- quantum optics
- free electrons
- single photon nonlinearity
- electron-photon interaction
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2403.13071
month: '07'
oa: 1
oa_version: Preprint
page: 3401-3411
publication: ACS Photonics
publication_identifier:
eissn:
- 2330-4022
publication_status: published
publisher: American Chemical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Strong coupling and single-photon nonlinearity in free-electron quantum optics
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 11
year: '2024'
...
---
OA_place: publisher
_id: '17164'
abstract:
- lang: eng
text: "This thesis is structured into two parts. In the first part, we consider
the random\r\nvariable X := Tr(f1(W)A1 . . . fk(W)Ak) where W is an N × N Hermitian
Wigner matrix, k ∈ N, and we choose (possibly N-dependent) regular functions f1,
. . . , fk as well as\r\nbounded deterministic matrices A1, . . . , Ak. In this
context, we prove a functional central\r\nlimit theorem on macroscopic and mesoscopic
scales, showing that the fluctuations of X\r\naround its expectation are Gaussian
and that the limiting covariance structure is given\r\nby a deterministic recursion.
We further give explicit error bounds in terms of the scaling\r\nof f1, . . .
, fk and the number of traceless matrices among A1, . . . , Ak, thus extending\r\nthe
results of Cipolloni, Erdős and Schröder [40] to products of arbitrary length
k ≥ 2.\r\nAnalyzing the underlying combinatorics leads to a non-recursive formula
for the variance\r\nof X as well as the covariance of X and Y := Tr(fk+1(W)Ak+1
. . . fk+ℓ(W)Ak+ℓ) of similar\r\nbuild. When restricted to polynomials, these
formulas reproduce recent results of Male,\r\nMingo, Peché, and Speicher [107],
showing that the underlying combinatorics of noncrossing partitions and annular
non-crossing permutations continue to stay valid beyond\r\nthe setting of second-order
free probability theory. As an application, we consider the\r\nfluctuation of
Tr(eitW A1e\r\n−itW A2)/N around its thermal value Tr(A1) Tr(A2)/N2 when t\r\nis
large and give an explicit formula for the variance.\r\nThe second part of the
thesis collects three smaller projects focusing on different random\r\nmatrix
models. In the first project, we show that a class of weakly perturbed Hamiltonians\r\nof
the form Hλ = H0 + λW, where W is a Wigner matrix, exhibits prethermalization.\r\nThat
is, the time evolution generated by Hλ relaxes to its ultimate thermal state via
an\r\nintermediate prethermal state with a lifetime of order λ\r\n−2\r\n. As the
main result, we obtain\r\na general relaxation formula, expressing the perturbed
dynamics via the unperturbed\r\ndynamics and the ultimate thermal state. The proof
relies on a two-resolvent global law\r\nfor the deformed Wigner matrix Hλ.\r\nThe
second project focuses on correlated random matrices, more precisely on a correlated
N × N Hermitian random matrix with a polynomially decaying metric correlation\r\nstructure.
A trivial a priori bound shows that the operator norm of this model is stochastically
dominated by √\r\nN. However, by calculating the trace of the moments of the matrix\r\nand
using the summable decay of the cumulants, the norm estimate can be improved to
a\r\nbound of order one.\r\nIn the third project, we consider a multiplicative
perturbation of the form UA(t) where U\r\nis a unitary random matrix and A = diag(t,
1, ..., 1). This so-called UA model was\r\nfirst introduced by Fyodorov [73] for
its applications in scattering theory. We give a\r\ngeneral description of the
eigenvalue trajectories obtained by varying the parameter t and\r\nintroduce a
flow of deterministic domains that separates the outlier resulting from the\r\nrank-one
perturbation from the typical eigenvalues for all sub-critical timescales. The\r\nresults
are obtained under generic assumptions on U that hold for various unitary random\r\nmatrices,
including the circular unitary ensemble (CUE) in the original formulation of\r\nthe
model."
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Jana
full_name: Reker, Jana
id: e796e4f9-dc8d-11ea-abe3-97e26a0323e9
last_name: Reker
citation:
ama: 'Reker J. Central limit theorems for random matrices: From resolvents to free
probability. 2024. doi:10.15479/at:ista:17164'
apa: 'Reker, J. (2024). Central limit theorems for random matrices: From resolvents
to free probability. Institute of Science and Technology Austria. https://doi.org/10.15479/at:ista:17164'
chicago: 'Reker, Jana. “Central Limit Theorems for Random Matrices: From Resolvents
to Free Probability.” Institute of Science and Technology Austria, 2024. https://doi.org/10.15479/at:ista:17164.'
ieee: 'J. Reker, “Central limit theorems for random matrices: From resolvents to
free probability,” Institute of Science and Technology Austria, 2024.'
ista: 'Reker J. 2024. Central limit theorems for random matrices: From resolvents
to free probability. Institute of Science and Technology Austria.'
mla: 'Reker, Jana. Central Limit Theorems for Random Matrices: From Resolvents
to Free Probability. Institute of Science and Technology Austria, 2024, doi:10.15479/at:ista:17164.'
short: 'J. Reker, Central Limit Theorems for Random Matrices: From Resolvents to
Free Probability, Institute of Science and Technology Austria, 2024.'
corr_author: '1'
date_created: 2024-06-24T11:23:29Z
date_published: 2024-06-26T00:00:00Z
date_updated: 2026-04-07T13:02:13Z
day: '26'
ddc:
- '519'
degree_awarded: PhD
department:
- _id: GradSch
- _id: LaEr
doi: 10.15479/at:ista:17164
ec_funded: 1
file:
- access_level: open_access
checksum: fb16d86e1f2753dc3a9e14d2bdfd84cd
content_type: application/pdf
creator: jreker
date_created: 2024-06-26T12:39:36Z
date_updated: 2024-06-26T12:44:53Z
file_id: '17176'
file_name: ISTA_Thesis_JReker.pdf
file_size: 2783027
relation: main_file
- access_level: closed
checksum: cb1e54009d47c1dcf5b866c4566fa27f
content_type: application/zip
creator: jreker
date_created: 2024-06-26T12:39:42Z
date_updated: 2024-06-26T12:44:53Z
file_id: '17177'
file_name: ISTA_Thesis_JReker_SourceFiles.zip
file_size: 3054878
relation: source_file
file_date_updated: 2024-06-26T12:44:53Z
has_accepted_license: '1'
keyword:
- Random Matrices
- Spectrum
- Central Limit Theorem
- Resolvent
- Free Probability
language:
- iso: eng
license: https://creativecommons.org/licenses/by-nc-sa/4.0/
month: '06'
oa: 1
oa_version: Published Version
page: '206'
project:
- _id: 62796744-2b32-11ec-9570-940b20777f1d
call_identifier: H2020
grant_number: '101020331'
name: Random matrices beyond Wigner-Dyson-Mehta
publication_identifier:
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '17173'
relation: part_of_dissertation
status: public
- id: '11135'
relation: part_of_dissertation
status: public
- id: '17047'
relation: part_of_dissertation
status: public
- id: '17154'
relation: part_of_dissertation
status: public
- id: '17174'
relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: László
full_name: Erdös, László
id: 4DBD5372-F248-11E8-B48F-1D18A9856A87
last_name: Erdös
orcid: 0000-0001-5366-9603
title: 'Central limit theorems for random matrices: From resolvents to free probability'
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: '9827'
abstract:
- lang: eng
text: 'The Nearest neighbour search (NNS) is a fundamental problem in many application
domains dealing with multidimensional data. In a concurrent setting, where dynamic
modifications are allowed, a linearizable implementation of the NNS is highly
desirable.This paper introduces the LockFree-kD-tree (LFkD-tree ): a lock-free
concurrent kD-tree, which implements an abstract data type (ADT) that provides
the operations Add, Remove, Contains, and NNS. Our implementation is linearizable.
The operations in the LFkD-tree use single-word read and compare-and-swap (Image
1 ) atomic primitives, which are readily supported on available multi-core processors.
We experimentally evaluate the LFkD-tree using several benchmarks comprising real-world
and synthetic datasets. The experiments show that the presented design is scalable
and achieves significant speed-up compared to the implementations of an existing
sequential kD-tree and a recently proposed multidimensional indexing structure,
PH-tree.'
article_processing_charge: No
article_type: original
author:
- first_name: Bapi
full_name: Chatterjee, Bapi
id: 3C41A08A-F248-11E8-B48F-1D18A9856A87
last_name: Chatterjee
orcid: 0000-0002-2742-4028
- first_name: Ivan
full_name: Walulya, Ivan
last_name: Walulya
- first_name: Philippas
full_name: Tsigas, Philippas
last_name: Tsigas
citation:
ama: Chatterjee B, Walulya I, Tsigas P. Concurrent linearizable nearest neighbour
search in LockFree-kD-tree. Theoretical Computer Science. 2021;886:27-48.
doi:10.1016/j.tcs.2021.06.041
apa: Chatterjee, B., Walulya, I., & Tsigas, P. (2021). Concurrent linearizable
nearest neighbour search in LockFree-kD-tree. Theoretical Computer Science.
Elsevier. https://doi.org/10.1016/j.tcs.2021.06.041
chicago: Chatterjee, Bapi, Ivan Walulya, and Philippas Tsigas. “Concurrent Linearizable
Nearest Neighbour Search in LockFree-KD-Tree.” Theoretical Computer Science.
Elsevier, 2021. https://doi.org/10.1016/j.tcs.2021.06.041.
ieee: B. Chatterjee, I. Walulya, and P. Tsigas, “Concurrent linearizable nearest
neighbour search in LockFree-kD-tree,” Theoretical Computer Science, vol.
886. Elsevier, pp. 27–48, 2021.
ista: Chatterjee B, Walulya I, Tsigas P. 2021. Concurrent linearizable nearest neighbour
search in LockFree-kD-tree. Theoretical Computer Science. 886, 27–48.
mla: Chatterjee, Bapi, et al. “Concurrent Linearizable Nearest Neighbour Search
in LockFree-KD-Tree.” Theoretical Computer Science, vol. 886, Elsevier,
2021, pp. 27–48, doi:10.1016/j.tcs.2021.06.041.
short: B. Chatterjee, I. Walulya, P. Tsigas, Theoretical Computer Science 886 (2021)
27–48.
corr_author: '1'
date_created: 2021-08-08T22:01:31Z
date_published: 2021-09-13T00:00:00Z
date_updated: 2024-10-09T21:00:45Z
day: '13'
department:
- _id: DaAl
doi: 10.1016/j.tcs.2021.06.041
external_id:
isi:
- '000694718900004'
intvolume: ' 886'
isi: 1
keyword:
- Concurrent data structure
- kD-tree
- Nearest neighbor search
- Similarity search
- Lock-free
- Linearizability
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://publications.lib.chalmers.se/records/fulltext/232185/232185.pdf
month: '09'
oa: 1
oa_version: Submitted Version
page: 27-48
publication: Theoretical Computer Science
publication_identifier:
issn:
- 0304-3975
publication_status: published
publisher: Elsevier
quality_controlled: '1'
scopus_import: '1'
status: public
title: Concurrent linearizable nearest neighbour search in LockFree-kD-tree
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 886
year: '2021'
...
---
OA_place: publisher
OA_type: free access
_id: '22570'
abstract:
- lang: eng
text: Atmospheric carbon dioxide concentration ([CO 2 ]) is increasing, which increases
leaf-scalephotosynthesis and intrinsic water-use efficiency. These direct responses
have the potential toincrease plant growth, vegetation biomass, and soil organic
matter; transferring carbon from theatmosphere into terrestrial ecosystems (a
carbon sink). A substantial global terrestrial carbon sinkwould slow the rate
of [CO 2] increase and thus climate change. However, ecosystem CO2responses are
complex or confounded by concurrent changes in multiple agents of global changeand
evidence for a [CO 2]-driven terrestrial carbon sink can appear contradictory.
Here wesynthesize theory and broad, multidisciplinary evidence for the effects
of increasing [CO 2](iCO 2) on the global terrestrial carbon sink. Evidence suggests
a substantial increase in globalphotosynthesis since pre-industrial times. Established
theory, supported by experiments,indicates that iCO 2 is likely responsible for
about half of the increase. Global carbon budgeting,atmospheric data, and forest
inventories indicate a historical carbon sink, and these apparentiCO 2 responses
are high in comparison to experiments and predictions from theory. Plantmortality
and soil carbon iCO 2 responses are highly uncertain. In conclusion, a range of
evidencesupports a positive terrestrial carbon sink in response to iCO2 , albeit
with uncertain magnitudeand strong suggestion of a role for additional agents
of global change.
article_processing_charge: No
article_type: original
author:
- first_name: Anthony P.
full_name: Walker, Anthony P.
last_name: Walker
- first_name: Martin G.
full_name: De Kauwe, Martin G.
last_name: De Kauwe
- first_name: Ana
full_name: Bastos, Ana
last_name: Bastos
- first_name: Soumaya
full_name: Belmecheri, Soumaya
last_name: Belmecheri
- first_name: Katerina
full_name: Georgiou, Katerina
last_name: Georgiou
- first_name: Ralph F.
full_name: Keeling, Ralph F.
last_name: Keeling
- first_name: Sean M.
full_name: McMahon, Sean M.
last_name: McMahon
- first_name: Belinda E.
full_name: Medlyn, Belinda E.
last_name: Medlyn
- first_name: David J. P.
full_name: Moore, David J. P.
last_name: Moore
- first_name: Richard J.
full_name: Norby, Richard J.
last_name: Norby
- first_name: Sönke
full_name: Zaehle, Sönke
last_name: Zaehle
- first_name: Kristina J.
full_name: Anderson‐Teixeira, Kristina J.
last_name: Anderson‐Teixeira
- first_name: Giovanna
full_name: Battipaglia, Giovanna
last_name: Battipaglia
- first_name: Roel J. W.
full_name: Brienen, Roel J. W.
last_name: Brienen
- first_name: Kristine G.
full_name: Cabugao, Kristine G.
last_name: Cabugao
- first_name: Maxime
full_name: Cailleret, Maxime
last_name: Cailleret
- first_name: Elliott
full_name: Campbell, Elliott
last_name: Campbell
- first_name: Josep G.
full_name: Canadell, Josep G.
last_name: Canadell
- first_name: Philippe
full_name: Ciais, Philippe
last_name: Ciais
- first_name: Matthew E.
full_name: Craig, Matthew E.
last_name: Craig
- first_name: David S.
full_name: Ellsworth, David S.
last_name: Ellsworth
- first_name: Graham D.
full_name: Farquhar, Graham D.
last_name: Farquhar
- first_name: Simone
full_name: Fatichi, Simone
id: cf8e546b-a9b0-11f0-a43b-aa89ed1b56d6
last_name: Fatichi
- first_name: Joshua B.
full_name: Fisher, Joshua B.
last_name: Fisher
- first_name: David C.
full_name: Frank, David C.
last_name: Frank
- first_name: Heather
full_name: Graven, Heather
last_name: Graven
- first_name: Lianhong
full_name: Gu, Lianhong
last_name: Gu
- first_name: Vanessa
full_name: Haverd, Vanessa
last_name: Haverd
- first_name: Kelly
full_name: Heilman, Kelly
last_name: Heilman
- first_name: Martin
full_name: Heimann, Martin
last_name: Heimann
- first_name: Bruce A.
full_name: Hungate, Bruce A.
last_name: Hungate
- first_name: Colleen M.
full_name: Iversen, Colleen M.
last_name: Iversen
- first_name: Fortunat
full_name: Joos, Fortunat
last_name: Joos
- first_name: Mingkai
full_name: Jiang, Mingkai
last_name: Jiang
- first_name: Trevor F.
full_name: Keenan, Trevor F.
last_name: Keenan
- first_name: Jürgen
full_name: Knauer, Jürgen
last_name: Knauer
- first_name: Christian
full_name: Körner, Christian
last_name: Körner
- first_name: Victor O.
full_name: Leshyk, Victor O.
last_name: Leshyk
- first_name: Sebastian
full_name: Leuzinger, Sebastian
last_name: Leuzinger
- first_name: Yao
full_name: Liu, Yao
last_name: Liu
- first_name: Natasha
full_name: MacBean, Natasha
last_name: MacBean
- first_name: Yadvinder
full_name: Malhi, Yadvinder
last_name: Malhi
- first_name: Tim R.
full_name: McVicar, Tim R.
last_name: McVicar
- first_name: Josep
full_name: Penuelas, Josep
last_name: Penuelas
- first_name: Julia
full_name: Pongratz, Julia
last_name: Pongratz
- first_name: A. Shafer
full_name: Powell, A. Shafer
last_name: Powell
- first_name: Terhi
full_name: Riutta, Terhi
last_name: Riutta
- first_name: Manon E. B.
full_name: Sabot, Manon E. B.
last_name: Sabot
- first_name: Juergen
full_name: Schleucher, Juergen
last_name: Schleucher
- first_name: Stephen
full_name: Sitch, Stephen
last_name: Sitch
- first_name: William K.
full_name: Smith, William K.
last_name: Smith
- first_name: Benjamin
full_name: Sulman, Benjamin
last_name: Sulman
- first_name: Benton
full_name: Taylor, Benton
last_name: Taylor
- first_name: César
full_name: Terrer, César
last_name: Terrer
- first_name: Margaret S.
full_name: Torn, Margaret S.
last_name: Torn
- first_name: Kathleen K.
full_name: Treseder, Kathleen K.
last_name: Treseder
- first_name: Anna T.
full_name: Trugman, Anna T.
last_name: Trugman
- first_name: Susan E.
full_name: Trumbore, Susan E.
last_name: Trumbore
- first_name: Phillip J.
full_name: van Mantgem, Phillip J.
last_name: van Mantgem
- first_name: Steve L.
full_name: Voelker, Steve L.
last_name: Voelker
- first_name: Mary E.
full_name: Whelan, Mary E.
last_name: Whelan
- first_name: Pieter A.
full_name: Zuidema, Pieter A.
last_name: Zuidema
citation:
ama: Walker AP, De Kauwe MG, Bastos A, et al. Integrating the evidence for a terrestrial
carbon sink caused by increasing atmospheric CO2. New Phytologist. 2021;229(5):2413-2445.
doi:10.1111/nph.16866
apa: Walker, A. P., De Kauwe, M. G., Bastos, A., Belmecheri, S., Georgiou, K., Keeling,
R. F., … Zuidema, P. A. (2021). Integrating the evidence for a terrestrial carbon
sink caused by increasing atmospheric CO2. New Phytologist. Wiley. https://doi.org/10.1111/nph.16866
chicago: Walker, Anthony P., Martin G. De Kauwe, Ana Bastos, Soumaya Belmecheri,
Katerina Georgiou, Ralph F. Keeling, Sean M. McMahon, et al. “Integrating the
Evidence for a Terrestrial Carbon Sink Caused by Increasing Atmospheric CO2.”
New Phytologist. Wiley, 2021. https://doi.org/10.1111/nph.16866.
ieee: A. P. Walker et al., “Integrating the evidence for a terrestrial carbon
sink caused by increasing atmospheric CO2,” New Phytologist, vol. 229,
no. 5. Wiley, pp. 2413–2445, 2021.
ista: Walker AP, De Kauwe MG, Bastos A, Belmecheri S, Georgiou K, Keeling RF, McMahon
SM, Medlyn BE, Moore DJP, Norby RJ, Zaehle S, Anderson‐Teixeira KJ, Battipaglia
G, Brienen RJW, Cabugao KG, Cailleret M, Campbell E, Canadell JG, Ciais P, Craig
ME, Ellsworth DS, Farquhar GD, Fatichi S, Fisher JB, Frank DC, Graven H, Gu L,
Haverd V, Heilman K, Heimann M, Hungate BA, Iversen CM, Joos F, Jiang M, Keenan
TF, Knauer J, Körner C, Leshyk VO, Leuzinger S, Liu Y, MacBean N, Malhi Y, McVicar
TR, Penuelas J, Pongratz J, Powell AS, Riutta T, Sabot MEB, Schleucher J, Sitch
S, Smith WK, Sulman B, Taylor B, Terrer C, Torn MS, Treseder KK, Trugman AT, Trumbore
SE, van Mantgem PJ, Voelker SL, Whelan ME, Zuidema PA. 2021. Integrating the evidence
for a terrestrial carbon sink caused by increasing atmospheric CO2. New Phytologist.
229(5), 2413–2445.
mla: Walker, Anthony P., et al. “Integrating the Evidence for a Terrestrial Carbon
Sink Caused by Increasing Atmospheric CO2.” New Phytologist, vol. 229,
no. 5, Wiley, 2021, pp. 2413–45, doi:10.1111/nph.16866.
short: A.P. Walker, M.G. De Kauwe, A. Bastos, S. Belmecheri, K. Georgiou, R.F. Keeling,
S.M. McMahon, B.E. Medlyn, D.J.P. Moore, R.J. Norby, S. Zaehle, K.J. Anderson‐Teixeira,
G. Battipaglia, R.J.W. Brienen, K.G. Cabugao, M. Cailleret, E. Campbell, J.G.
Canadell, P. Ciais, M.E. Craig, D.S. Ellsworth, G.D. Farquhar, S. Fatichi, J.B.
Fisher, D.C. Frank, H. Graven, L. Gu, V. Haverd, K. Heilman, M. Heimann, B.A.
Hungate, C.M. Iversen, F. Joos, M. Jiang, T.F. Keenan, J. Knauer, C. Körner, V.O.
Leshyk, S. Leuzinger, Y. Liu, N. MacBean, Y. Malhi, T.R. McVicar, J. Penuelas,
J. Pongratz, A.S. Powell, T. Riutta, M.E.B. Sabot, J. Schleucher, S. Sitch, W.K.
Smith, B. Sulman, B. Taylor, C. Terrer, M.S. Torn, K.K. Treseder, A.T. Trugman,
S.E. Trumbore, P.J. van Mantgem, S.L. Voelker, M.E. Whelan, P.A. Zuidema, New
Phytologist 229 (2021) 2413–2445.
das_tickbox: '1'
date_created: 2026-07-27T12:30:24Z
date_published: 2021-03-01T00:00:00Z
date_updated: 2026-08-06T08:39:39Z
day: '01'
doi: 10.1111/nph.16866
extern: '1'
external_id:
pmid:
- '32789857'
intvolume: ' 229'
issue: '5'
keyword:
- Beta factor
- Carbon dioxide
- CO2 fertilization
- CO2-fertilization hypothesis
- Free-air CO2 enrichment (FACE)
- Global carbon cycle
- Land–atmosphere feedback
- Terrestrial ecosystems
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1111/nph.16866
month: '03'
oa: 1
oa_version: Published Version
page: 2413-2445
pmid: 1
publication: New Phytologist
publication_identifier:
eissn:
- 1469-8137
issn:
- 0028-646X
publication_status: published
publisher: Wiley
quality_controlled: '1'
scopus_import: '1'
status: public
title: Integrating the evidence for a terrestrial carbon sink caused by increasing
atmospheric CO2
type: journal_article
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 229
year: '2021'
...
---
OA_place: publisher
OA_type: hybrid
_id: '21525'
abstract:
- lang: eng
text: We present a novel design for an ultracompact, passive light source capable
of generating ultraviolet and X-ray radiation, based on the interaction of free
electrons with the magnetic near-field of a ferromagnet. Our design is motivated
by recent advances in the fabrication of nanostructures, which allow the confinement
of large magnetic fields at the surface of ferromagnetic nanogratings. Using ab
initio simulations and a complementary analytical theory, we show that highly
directional, tunable, monochromatic radiation at high frequencies could be produced
from relatively low-energy electrons within a tabletop design. The output frequency
is tunable in the extreme ultraviolet to hard X-ray range via electron kinetic
energies from 1 keV to 5 MeV and nanograting periods from 1 μm to 5 nm. The proposed
radiation source can achieve the tunability and monochromaticity of current free-electron-driven
sources (free-electron lasers, synchrotrons, and laser-driven undulators), yet
with a significantly reduced scale, cost, and complexity. Our design could help
realize the next generation of tabletop or on-chip X-ray sources.
article_processing_charge: No
article_type: letter_note
arxiv: 1
author:
- first_name: Sophie
full_name: Fisher, Sophie
last_name: Fisher
- first_name: Charles
full_name: Roques-Carmes, Charles
id: e2e68fc9-6505-11ef-a541-eb4e72cc3e82
last_name: Roques-Carmes
- first_name: Nicholas
full_name: Rivera, Nicholas
last_name: Rivera
- first_name: Liang Jie
full_name: Wong, Liang Jie
last_name: Wong
- first_name: Ido
full_name: Kaminer, Ido
last_name: Kaminer
- first_name: Marin
full_name: Soljačić, Marin
last_name: Soljačić
citation:
ama: Fisher S, Roques-Carmes C, Rivera N, Wong LJ, Kaminer I, Soljačić M. Monochromatic
X-ray source based on scattering from a magnetic nanoundulator. ACS Photonics.
2020;7(5):1096-1103. doi:10.1021/acsphotonics.0c00121
apa: Fisher, S., Roques-Carmes, C., Rivera, N., Wong, L. J., Kaminer, I., &
Soljačić, M. (2020). Monochromatic X-ray source based on scattering from a magnetic
nanoundulator. ACS Photonics. American Chemical Society . https://doi.org/10.1021/acsphotonics.0c00121
chicago: Fisher, Sophie, Charles Roques-Carmes, Nicholas Rivera, Liang Jie Wong,
Ido Kaminer, and Marin Soljačić. “Monochromatic X-Ray Source Based on Scattering
from a Magnetic Nanoundulator.” ACS Photonics. American Chemical Society
, 2020. https://doi.org/10.1021/acsphotonics.0c00121.
ieee: S. Fisher, C. Roques-Carmes, N. Rivera, L. J. Wong, I. Kaminer, and M. Soljačić,
“Monochromatic X-ray source based on scattering from a magnetic nanoundulator,”
ACS Photonics, vol. 7, no. 5. American Chemical Society , pp. 1096–1103,
2020.
ista: Fisher S, Roques-Carmes C, Rivera N, Wong LJ, Kaminer I, Soljačić M. 2020.
Monochromatic X-ray source based on scattering from a magnetic nanoundulator.
ACS Photonics. 7(5), 1096–1103.
mla: Fisher, Sophie, et al. “Monochromatic X-Ray Source Based on Scattering from
a Magnetic Nanoundulator.” ACS Photonics, vol. 7, no. 5, American Chemical
Society , 2020, pp. 1096–103, doi:10.1021/acsphotonics.0c00121.
short: S. Fisher, C. Roques-Carmes, N. Rivera, L.J. Wong, I. Kaminer, M. Soljačić,
ACS Photonics 7 (2020) 1096–1103.
date_created: 2026-03-30T12:22:47Z
date_published: 2020-04-01T00:00:00Z
date_updated: 2026-04-15T11:51:29Z
day: '01'
ddc:
- '530'
doi: 10.1021/acsphotonics.0c00121
extern: '1'
external_id:
arxiv:
- '1910.09629'
pmid:
- ' 32596415'
has_accepted_license: '1'
intvolume: ' 7'
issue: '5'
keyword:
- X-ray sources
- free electrons
- nanostructure
- undulator
- synchrotron
- free-electron laser
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1021/acsphotonics.0c00121
month: '04'
oa: 1
oa_version: Published Version
page: 1096-1103
pmid: 1
publication: ACS Photonics
publication_identifier:
eissn:
- 2330-4022
publication_status: published
publisher: 'American Chemical Society '
quality_controlled: '1'
scopus_import: '1'
status: public
title: Monochromatic X-ray source based on scattering from a magnetic nanoundulator
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: 7
year: '2020'
...
---
OA_place: repository
OA_type: green
_id: '21533'
abstract:
- lang: eng
text: Recent advances in the fabrication of nanostructures and nanoscale features
in metasurfaces offer new prospects for generating visible light emission from
low-energy electrons. Here we present the experimental observation of visible
light emission from low-energy free electrons interacting with nanoscale periodic
surfaces through the Smith–Purcell (SP) effect. We demonstrate SP light emission
from nanoscale gratings with periodicity as small as 50 nm, enabling the observation
of tunable visible radiation from low-energy electrons (1.5 to 6 keV), an order
of magnitude lower in energy than previously reported. We study the emission wavelength
and intensity dependence on the grating pitch and electron energy, showing agreement
between experiment and theory. Our results open the way to the production of SP-based
nanophotonics integrated devices. Built inside electron microscopes, SP sources
could enable the development of novel electron–optical correlated spectroscopic
techniques and facilitate the observation of new quantum effects in light sources.
article_processing_charge: No
article_type: letter_note
arxiv: 1
author:
- first_name: Aviram
full_name: Massuda, Aviram
last_name: Massuda
- first_name: Charles
full_name: Roques-Carmes, Charles
id: e2e68fc9-6505-11ef-a541-eb4e72cc3e82
last_name: Roques-Carmes
- first_name: Yujia
full_name: Yang, Yujia
last_name: Yang
- first_name: Steven E.
full_name: Kooi, Steven E.
last_name: Kooi
- first_name: Yi
full_name: Yang, Yi
last_name: Yang
- first_name: Chitraang
full_name: Murdia, Chitraang
last_name: Murdia
- first_name: Karl K.
full_name: Berggren, Karl K.
last_name: Berggren
- first_name: Ido
full_name: Kaminer, Ido
last_name: Kaminer
- first_name: Marin
full_name: Soljačić, Marin
last_name: Soljačić
citation:
ama: Massuda A, Roques-Carmes C, Yang Y, et al. Smith–Purcell radiation from low-energy
electrons. ACS Photonics. 2018;5(9):3513-3518. doi:10.1021/acsphotonics.8b00743
apa: Massuda, A., Roques-Carmes, C., Yang, Y., Kooi, S. E., Yang, Y., Murdia, C.,
… Soljačić, M. (2018). Smith–Purcell radiation from low-energy electrons. ACS
Photonics. American Chemical Society . https://doi.org/10.1021/acsphotonics.8b00743
chicago: Massuda, Aviram, Charles Roques-Carmes, Yujia Yang, Steven E. Kooi, Yi
Yang, Chitraang Murdia, Karl K. Berggren, Ido Kaminer, and Marin Soljačić. “Smith–Purcell
Radiation from Low-Energy Electrons.” ACS Photonics. American Chemical
Society , 2018. https://doi.org/10.1021/acsphotonics.8b00743.
ieee: A. Massuda et al., “Smith–Purcell radiation from low-energy electrons,”
ACS Photonics, vol. 5, no. 9. American Chemical Society , pp. 3513–3518,
2018.
ista: Massuda A, Roques-Carmes C, Yang Y, Kooi SE, Yang Y, Murdia C, Berggren KK,
Kaminer I, Soljačić M. 2018. Smith–Purcell radiation from low-energy electrons.
ACS Photonics. 5(9), 3513–3518.
mla: Massuda, Aviram, et al. “Smith–Purcell Radiation from Low-Energy Electrons.”
ACS Photonics, vol. 5, no. 9, American Chemical Society , 2018, pp. 3513–18,
doi:10.1021/acsphotonics.8b00743.
short: A. Massuda, C. Roques-Carmes, Y. Yang, S.E. Kooi, Y. Yang, C. Murdia, K.K.
Berggren, I. Kaminer, M. Soljačić, ACS Photonics 5 (2018) 3513–3518.
date_created: 2026-03-30T12:22:47Z
date_published: 2018-08-30T00:00:00Z
date_updated: 2026-04-15T11:48:45Z
day: '30'
ddc:
- '530'
doi: 10.1021/acsphotonics.8b00743
extern: '1'
external_id:
arxiv:
- '1710.05358'
intvolume: ' 5'
issue: '9'
keyword:
- light−matter interactions
- periodic structures
- nanophotonics
- free-electron light sources
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.1710.05358
month: '08'
oa: 1
oa_version: Preprint
page: 3513-3518
publication: ACS Photonics
publication_identifier:
eissn:
- 2330-4022
publication_status: published
publisher: 'American Chemical Society '
quality_controlled: '1'
scopus_import: '1'
status: public
title: Smith–Purcell radiation from low-energy electrons
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 5
year: '2018'
...
---
OA_type: closed access
_id: '1317'
abstract:
- lang: eng
text: We analyze the behaviour of free boundaries in thin-film flow in the regime
of strong slippage n∈[1,2) and in the regime of very weak slippage n∈,3) qualitatively
and quantitatively. In the regime of strong slippage, we construct initial data
which are bounded from above by the steady state but for which nevertheless instantaneous
forward motion of the free boundary occurs. This shows that the initial behaviour
of the free boundary is not determined just by the growth of the initial data
at the free boundary. Note that this is a new phenomenon for degenerate parabolic
equations which is specific for higher-order equations. Furthermore, this result
resolves a controversy in the literature over optimality of sufficient conditions
for the occurrence of a waiting time phenomenon. In contrast, in the regime of
very weak slippage we derive lower bounds on free boundary propagation which are
optimal in the sense that they coincide up to a constant factor with the known
upper bounds. In particular, in this regime the growth of the initial data at
the free boundary fully determines the initial behaviour of the interface.
article_processing_charge: No
article_type: original
author:
- first_name: Julian L
full_name: Fischer, Julian L
id: 2C12A0B0-F248-11E8-B48F-1D18A9856A87
last_name: Fischer
orcid: 0000-0002-0479-558X
citation:
ama: 'Fischer JL. Behaviour of free boundaries in thin-film flow: The regime of
strong slippage and the regime of very weak slippage. Annales de l’Institut
Henri Poincare (C) Non Linear Analysis. 2016;33(5):1301-1327. doi:10.1016/j.anihpc.2015.05.001'
apa: 'Fischer, J. L. (2016). Behaviour of free boundaries in thin-film flow: The
regime of strong slippage and the regime of very weak slippage. Annales de
l’Institut Henri Poincare (C) Non Linear Analysis. EMS Press. https://doi.org/10.1016/j.anihpc.2015.05.001'
chicago: 'Fischer, Julian L. “Behaviour of Free Boundaries in Thin-Film Flow: The
Regime of Strong Slippage and the Regime of Very Weak Slippage.” Annales de
l’Institut Henri Poincare (C) Non Linear Analysis. EMS Press, 2016. https://doi.org/10.1016/j.anihpc.2015.05.001.'
ieee: 'J. L. Fischer, “Behaviour of free boundaries in thin-film flow: The regime
of strong slippage and the regime of very weak slippage,” Annales de l’Institut
Henri Poincare (C) Non Linear Analysis, vol. 33, no. 5. EMS Press, pp. 1301–1327,
2016.'
ista: 'Fischer JL. 2016. Behaviour of free boundaries in thin-film flow: The regime
of strong slippage and the regime of very weak slippage. Annales de l’Institut
Henri Poincare (C) Non Linear Analysis. 33(5), 1301–1327.'
mla: 'Fischer, Julian L. “Behaviour of Free Boundaries in Thin-Film Flow: The Regime
of Strong Slippage and the Regime of Very Weak Slippage.” Annales de l’Institut
Henri Poincare (C) Non Linear Analysis, vol. 33, no. 5, EMS Press, 2016, pp.
1301–27, doi:10.1016/j.anihpc.2015.05.001.'
short: J.L. Fischer, Annales de l’Institut Henri Poincare (C) Non Linear Analysis
33 (2016) 1301–1327.
date_created: 2018-12-11T11:51:20Z
date_published: 2016-10-01T00:00:00Z
date_updated: 2026-05-06T07:02:19Z
day: '01'
doi: 10.1016/j.anihpc.2015.05.001
extern: '1'
intvolume: ' 33'
issue: '5'
keyword:
- Thin-film equation
- Free boundary
- Waiting time
- Qualitative behaviour
- Higher-order parabolic equation
- Degenerate parabolic equation
language:
- iso: eng
month: '10'
oa_version: None
page: 1301 - 1327
publication: Annales de l'Institut Henri Poincare (C) Non Linear Analysis
publication_identifier:
eissn:
- 1873-1430
issnl:
- 0294-1449
publication_status: published
publisher: EMS Press
publist_id: '5952'
quality_controlled: '1'
status: public
title: 'Behaviour of free boundaries in thin-film flow: The regime of strong slippage
and the regime of very weak slippage'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 33
year: '2016'
...
---
_id: '10396'
abstract:
- lang: eng
text: Stimfit is a free cross-platform software package for viewing and analyzing
electrophysiological data. It supports most standard file types for cellular neurophysiology
and other biomedical formats. Its analysis algorithms have been used and validated
in several experimental laboratories. Its embedded Python scripting interface
makes Stimfit highly extensible and customizable.
article_number: '000010151520134181'
article_processing_charge: No
article_type: original
author:
- first_name: Alois
full_name: Schlögl, Alois
id: 45BF87EE-F248-11E8-B48F-1D18A9856A87
last_name: Schlögl
orcid: 0000-0002-5621-8100
- first_name: Peter M
full_name: Jonas, Peter M
id: 353C1B58-F248-11E8-B48F-1D18A9856A87
last_name: Jonas
orcid: 0000-0001-5001-4804
- first_name: C.
full_name: Schmidt-Hieber, C.
last_name: Schmidt-Hieber
- first_name: S. J.
full_name: Guzman, S. J.
last_name: Guzman
citation:
ama: 'Schlögl A, Jonas PM, Schmidt-Hieber C, Guzman SJ. Stimfit: A fast visualization
and analysis environment for cellular neurophysiology. Biomedical Engineering
/ Biomedizinische Technik. 2013;58(SI-1-Track-G). doi:10.1515/bmt-2013-4181'
apa: 'Schlögl, A., Jonas, P. M., Schmidt-Hieber, C., & Guzman, S. J. (2013).
Stimfit: A fast visualization and analysis environment for cellular neurophysiology.
Biomedical Engineering / Biomedizinische Technik. Graz, Austria: De Gruyter.
https://doi.org/10.1515/bmt-2013-4181'
chicago: 'Schlögl, Alois, Peter M Jonas, C. Schmidt-Hieber, and S. J. Guzman. “Stimfit:
A Fast Visualization and Analysis Environment for Cellular Neurophysiology.” Biomedical
Engineering / Biomedizinische Technik. De Gruyter, 2013. https://doi.org/10.1515/bmt-2013-4181.'
ieee: 'A. Schlögl, P. M. Jonas, C. Schmidt-Hieber, and S. J. Guzman, “Stimfit: A
fast visualization and analysis environment for cellular neurophysiology,” Biomedical
Engineering / Biomedizinische Technik, vol. 58, no. SI-1-Track-G. De Gruyter,
2013.'
ista: 'Schlögl A, Jonas PM, Schmidt-Hieber C, Guzman SJ. 2013. Stimfit: A fast visualization
and analysis environment for cellular neurophysiology. Biomedical Engineering
/ Biomedizinische Technik. 58(SI-1-Track-G), 000010151520134181.'
mla: 'Schlögl, Alois, et al. “Stimfit: A Fast Visualization and Analysis Environment
for Cellular Neurophysiology.” Biomedical Engineering / Biomedizinische Technik,
vol. 58, no. SI-1-Track-G, 000010151520134181, De Gruyter, 2013, doi:10.1515/bmt-2013-4181.'
short: A. Schlögl, P.M. Jonas, C. Schmidt-Hieber, S.J. Guzman, Biomedical Engineering
/ Biomedizinische Technik 58 (2013).
conference:
end_date: 2013-09-21
location: Graz, Austria
name: 'BMT: Biomedizinische Technik '
start_date: 2013-09-19
corr_author: '1'
date_created: 2021-12-01T14:35:35Z
date_published: 2013-08-01T00:00:00Z
date_updated: 2025-09-30T07:31:23Z
day: '01'
ddc:
- '005'
- '610'
department:
- _id: PeJo
doi: 10.1515/bmt-2013-4181
external_id:
isi:
- '000497714000034'
pmid:
- '24042795'
file:
- access_level: open_access
checksum: cdfc5339b530a25d6079f7223f0b1f16
content_type: application/pdf
creator: schloegl
date_created: 2021-12-01T14:38:08Z
date_updated: 2021-12-01T14:38:08Z
file_id: '10397'
file_name: Schloegl_Abstract-BMT2013.pdf
file_size: 149825
relation: main_file
success: 1
file_date_updated: 2021-12-01T14:38:08Z
has_accepted_license: '1'
intvolume: ' 58'
isi: 1
issue: SI-1-Track-G
keyword:
- biomedical engineering
- data analysis
- free software
language:
- iso: eng
month: '08'
oa: 1
oa_version: Submitted Version
pmid: 1
publication: Biomedical Engineering / Biomedizinische Technik
publication_identifier:
eissn:
- 1862-278X
issn:
- 0013-5585
publication_status: published
publisher: De Gruyter
quality_controlled: '1'
status: public
title: 'Stimfit: A fast visualization and analysis environment for cellular neurophysiology'
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 58
year: '2013'
...