---
_id: '65096'
abstract:
- lang: eng
text: "\r\n Precise measurements of both the arrival
time and carrier frequency of light pulses are essential for time–frequency-encoded
quantum technologies. Quantum mechanics, however, imposes fundamental limits on
the simultaneous determination of these quantities. In this work, we derive and
experimentally verify the quantum uncertainty bounds governing joint time–frequency
measurements. We show that when detection is restricted to finite time windows,
the problem is naturally described by a quantum rotor, rendering the commonly
used Heisenberg uncertainty relation inapplicable. We further propose an optimal
detection scheme that saturates these fundamental limits. By sampling the\r\n
\ Q\r\n -function,
we demonstrate the reconstruction of the Wigner function beyond the harmonic oscillator.
Using an experimental implementation based on a quantum pulse gate, we confirm
that the proposed scheme approaches the ultimate quantum limit for simultaneous
time–frequency measurements. These results provide a framework for joint time–frequency
detection with direct implications for precision measurements and quantum information
processing.\r\n "
article_number: '548'
author:
- first_name: Patrick Fabian
full_name: Folge, Patrick Fabian
id: '88605'
last_name: Folge
- first_name: Laura Maria
full_name: Serino, Laura Maria
id: '88242'
last_name: Serino
- first_name: Ladislav
full_name: Mišta, Ladislav
last_name: Mišta
- first_name: Benjamin
full_name: Brecht, Benjamin
id: '27150'
last_name: Brecht
orcid: '0000-0003-4140-0556 '
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
- first_name: Jaroslav
full_name: Řeháček, Jaroslav
last_name: Řeháček
- first_name: Zdeněk
full_name: Hradil, Zdeněk
last_name: Hradil
citation:
ama: Folge PF, Serino LM, Mišta L, et al. Quantum-limited detection of the arrival
time and the carrier frequency of time-dependent signals. Optica. 2026;13(3).
doi:10.1364/optica.579459
apa: Folge, P. F., Serino, L. M., Mišta, L., Brecht, B., Silberhorn, C., Řeháček,
J., & Hradil, Z. (2026). Quantum-limited detection of the arrival time and
the carrier frequency of time-dependent signals. Optica, 13(3),
Article 548. https://doi.org/10.1364/optica.579459
bibtex: '@article{Folge_Serino_Mišta_Brecht_Silberhorn_Řeháček_Hradil_2026, title={Quantum-limited
detection of the arrival time and the carrier frequency of time-dependent signals},
volume={13}, DOI={10.1364/optica.579459},
number={3548}, journal={Optica}, publisher={Optica Publishing Group}, author={Folge,
Patrick Fabian and Serino, Laura Maria and Mišta, Ladislav and Brecht, Benjamin
and Silberhorn, Christine and Řeháček, Jaroslav and Hradil, Zdeněk}, year={2026}
}'
chicago: Folge, Patrick Fabian, Laura Maria Serino, Ladislav Mišta, Benjamin Brecht,
Christine Silberhorn, Jaroslav Řeháček, and Zdeněk Hradil. “Quantum-Limited Detection
of the Arrival Time and the Carrier Frequency of Time-Dependent Signals.” Optica
13, no. 3 (2026). https://doi.org/10.1364/optica.579459.
ieee: 'P. F. Folge et al., “Quantum-limited detection of the arrival time
and the carrier frequency of time-dependent signals,” Optica, vol. 13,
no. 3, Art. no. 548, 2026, doi: 10.1364/optica.579459.'
mla: Folge, Patrick Fabian, et al. “Quantum-Limited Detection of the Arrival Time
and the Carrier Frequency of Time-Dependent Signals.” Optica, vol. 13,
no. 3, 548, Optica Publishing Group, 2026, doi:10.1364/optica.579459.
short: P.F. Folge, L.M. Serino, L. Mišta, B. Brecht, C. Silberhorn, J. Řeháček,
Z. Hradil, Optica 13 (2026).
date_created: 2026-03-23T12:30:02Z
date_updated: 2026-03-25T07:59:23Z
department:
- _id: '15'
- _id: '623'
- _id: '288'
doi: 10.1364/optica.579459
intvolume: ' 13'
issue: '3'
language:
- iso: eng
publication: Optica
publication_identifier:
issn:
- 2334-2536
publication_status: published
publisher: Optica Publishing Group
status: public
title: Quantum-limited detection of the arrival time and the carrier frequency of
time-dependent signals
type: journal_article
user_id: '27150'
volume: 13
year: '2026'
...
---
_id: '65095'
abstract:
- lang: eng
text: "\r\n We provide experimental validation of tight
entropic uncertainty relations for the Shannon entropies of observables with mutually
unbiased eigenstates in high dimensions. In particular, we address the cases of
dimensions\r\n \r\n
\ \r\n d\r\n =\r\n
\ 3\r\n \r\n
\ \r\n , 4, and 5 and consider from
2 to\r\n \r\n
\ \r\n d\r\n +\r\n
\ 1\r\n \r\n
\ \r\n mutually unbiased bases.
The experiment is based on pulsed frequency bins measured with a multioutput quantum
pulse gate, which can perform projective measurements on a complete high-dimensional
basis in the time-frequency domain. Our results fit the theoretical predictions:
the bound on the sum of the entropies is never violated and is saturated by the
states that minimize the uncertainty relations.\r\n "
article_number: '032420'
author:
- first_name: Laura Maria
full_name: Serino, Laura Maria
id: '88242'
last_name: Serino
- first_name: Giovanni
full_name: Chesi, Giovanni
last_name: Chesi
- first_name: Benjamin
full_name: Brecht, Benjamin
id: '27150'
last_name: Brecht
orcid: '0000-0003-4140-0556 '
- first_name: Lorenzo
full_name: Maccone, Lorenzo
last_name: Maccone
- first_name: Chiara
full_name: Macchiavello, Chiara
last_name: Macchiavello
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: Serino LM, Chesi G, Brecht B, Maccone L, Macchiavello C, Silberhorn C. Experimental
entropic uncertainty relations in dimensions three to five. Physical Review
A. 2026;113(3). doi:10.1103/f6c4-jtlc
apa: Serino, L. M., Chesi, G., Brecht, B., Maccone, L., Macchiavello, C., &
Silberhorn, C. (2026). Experimental entropic uncertainty relations in dimensions
three to five. Physical Review A, 113(3), Article 032420. https://doi.org/10.1103/f6c4-jtlc
bibtex: '@article{Serino_Chesi_Brecht_Maccone_Macchiavello_Silberhorn_2026, title={Experimental
entropic uncertainty relations in dimensions three to five}, volume={113}, DOI={10.1103/f6c4-jtlc}, number={3032420},
journal={Physical Review A}, publisher={American Physical Society (APS)}, author={Serino,
Laura Maria and Chesi, Giovanni and Brecht, Benjamin and Maccone, Lorenzo and
Macchiavello, Chiara and Silberhorn, Christine}, year={2026} }'
chicago: Serino, Laura Maria, Giovanni Chesi, Benjamin Brecht, Lorenzo Maccone,
Chiara Macchiavello, and Christine Silberhorn. “Experimental Entropic Uncertainty
Relations in Dimensions Three to Five.” Physical Review A 113, no. 3 (2026).
https://doi.org/10.1103/f6c4-jtlc.
ieee: 'L. M. Serino, G. Chesi, B. Brecht, L. Maccone, C. Macchiavello, and C. Silberhorn,
“Experimental entropic uncertainty relations in dimensions three to five,” Physical
Review A, vol. 113, no. 3, Art. no. 032420, 2026, doi: 10.1103/f6c4-jtlc.'
mla: Serino, Laura Maria, et al. “Experimental Entropic Uncertainty Relations in
Dimensions Three to Five.” Physical Review A, vol. 113, no. 3, 032420,
American Physical Society (APS), 2026, doi:10.1103/f6c4-jtlc.
short: L.M. Serino, G. Chesi, B. Brecht, L. Maccone, C. Macchiavello, C. Silberhorn,
Physical Review A 113 (2026).
date_created: 2026-03-23T12:29:23Z
date_updated: 2026-03-25T07:59:36Z
department:
- _id: '15'
- _id: '623'
- _id: '288'
doi: 10.1103/f6c4-jtlc
intvolume: ' 113'
issue: '3'
language:
- iso: eng
publication: Physical Review A
publication_identifier:
issn:
- 2469-9926
- 2469-9934
publication_status: published
publisher: American Physical Society (APS)
status: public
title: Experimental entropic uncertainty relations in dimensions three to five
type: journal_article
user_id: '27150'
volume: 113
year: '2026'
...
---
_id: '63213'
abstract:
- lang: eng
text: 'Quantum uncertainty relations impose fundamental limits on the joint
knowledge that can be acquired from complementary observables: Perfect knowledge
of a quantum state in one basis implies maximal indetermination in all other mutually
unbiased bases (MUBs). Uncertainty relations derived from joint properties of
the MUBs are generally assumed to be uniform, irrespective of the specific observables
chosen within a set. In this work, we demonstrate instead that the uncertainty
relations can depend on the choice of observables. Through both experimental observation
and numerical methods, we show that selecting different sets of three MUBs in
a five-dimensional quantum system results in distinct uncertainty bounds, i.e.,
in varying degrees of complementarity, in terms of both entropy and variance.'
article_number: '033152'
article_type: original
author:
- first_name: Laura Maria
full_name: Serino, Laura Maria
id: '88242'
last_name: Serino
- first_name: Giovanni
full_name: Chesi, Giovanni
last_name: Chesi
- first_name: Benjamin
full_name: Brecht, Benjamin
id: '27150'
last_name: Brecht
orcid: '0000-0003-4140-0556 '
- first_name: Lorenzo
full_name: Maccone, Lorenzo
last_name: Maccone
- first_name: Chiara
full_name: Macchiavello, Chiara
last_name: Macchiavello
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: 'Serino LM, Chesi G, Brecht B, Maccone L, Macchiavello C, Silberhorn C. Complementarity-based
complementarity: The choice of mutually unbiased observables shapes quantum uncertainty
relations. Physical Review Research. 2025;7(3). doi:10.1103/v24q-sl6n'
apa: 'Serino, L. M., Chesi, G., Brecht, B., Maccone, L., Macchiavello, C., &
Silberhorn, C. (2025). Complementarity-based complementarity: The choice of mutually
unbiased observables shapes quantum uncertainty relations. Physical Review
Research, 7(3), Article 033152. https://doi.org/10.1103/v24q-sl6n'
bibtex: '@article{Serino_Chesi_Brecht_Maccone_Macchiavello_Silberhorn_2025, title={Complementarity-based
complementarity: The choice of mutually unbiased observables shapes quantum uncertainty
relations}, volume={7}, DOI={10.1103/v24q-sl6n},
number={3033152}, journal={Physical Review Research}, publisher={American Physical
Society (APS)}, author={Serino, Laura Maria and Chesi, Giovanni and Brecht, Benjamin
and Maccone, Lorenzo and Macchiavello, Chiara and Silberhorn, Christine}, year={2025}
}'
chicago: 'Serino, Laura Maria, Giovanni Chesi, Benjamin Brecht, Lorenzo Maccone,
Chiara Macchiavello, and Christine Silberhorn. “Complementarity-Based Complementarity:
The Choice of Mutually Unbiased Observables Shapes Quantum Uncertainty Relations.”
Physical Review Research 7, no. 3 (2025). https://doi.org/10.1103/v24q-sl6n.'
ieee: 'L. M. Serino, G. Chesi, B. Brecht, L. Maccone, C. Macchiavello, and C. Silberhorn,
“Complementarity-based complementarity: The choice of mutually unbiased observables
shapes quantum uncertainty relations,” Physical Review Research, vol. 7,
no. 3, Art. no. 033152, 2025, doi: 10.1103/v24q-sl6n.'
mla: 'Serino, Laura Maria, et al. “Complementarity-Based Complementarity: The Choice
of Mutually Unbiased Observables Shapes Quantum Uncertainty Relations.” Physical
Review Research, vol. 7, no. 3, 033152, American Physical Society (APS), 2025,
doi:10.1103/v24q-sl6n.'
short: L.M. Serino, G. Chesi, B. Brecht, L. Maccone, C. Macchiavello, C. Silberhorn,
Physical Review Research 7 (2025).
date_created: 2025-12-18T16:04:45Z
date_updated: 2025-12-18T16:05:45Z
department:
- _id: '15'
- _id: '623'
doi: 10.1103/v24q-sl6n
intvolume: ' 7'
issue: '3'
language:
- iso: eng
publication: Physical Review Research
publication_identifier:
issn:
- 2643-1564
publication_status: published
publisher: American Physical Society (APS)
status: public
title: 'Complementarity-based complementarity: The choice of mutually unbiased observables
shapes quantum uncertainty relations'
type: journal_article
user_id: '27150'
volume: 7
year: '2025'
...
---
_id: '63215'
abstract:
- lang: eng
text: "Abstract\r\n High-dimensional
time-frequency encodings have the potential to significantly advance quantum information
science; however, practical applications require precise knowledge of the encoded
quantum states, which becomes increasingly challenging for larger Hilbert spaces.
Self-guided tomography (SGT) has emerged as a practical and scalable technique
for this purpose in the spatial domain. Here, we apply SGT to estimate time-frequency
states using a multi-output quantum pulse gate. We achieve fidelities of more
than 99% for 3- and 5-dimensional states without the need for calibration or post-processing.
We demonstrate the robustness of SGT against statistical and environmental noise,
highlighting its efficacy in the photon-starved regime typical of quantum information
applications."
article_number: '025024'
author:
- first_name: Laura Maria
full_name: Serino, Laura Maria
id: '88242'
last_name: Serino
- first_name: Markus
full_name: Rambach, Markus
last_name: Rambach
- first_name: Benjamin
full_name: Brecht, Benjamin
id: '27150'
last_name: Brecht
orcid: '0000-0003-4140-0556 '
- first_name: Jacquiline
full_name: Romero, Jacquiline
last_name: Romero
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: Serino LM, Rambach M, Brecht B, Romero J, Silberhorn C. Self-guided tomography
of time-frequency qudits. Quantum Science and Technology. 2025;10(2). doi:10.1088/2058-9565/adb0ea
apa: Serino, L. M., Rambach, M., Brecht, B., Romero, J., & Silberhorn, C. (2025).
Self-guided tomography of time-frequency qudits. Quantum Science and Technology,
10(2), Article 025024. https://doi.org/10.1088/2058-9565/adb0ea
bibtex: '@article{Serino_Rambach_Brecht_Romero_Silberhorn_2025, title={Self-guided
tomography of time-frequency qudits}, volume={10}, DOI={10.1088/2058-9565/adb0ea},
number={2025024}, journal={Quantum Science and Technology}, publisher={IOP Publishing},
author={Serino, Laura Maria and Rambach, Markus and Brecht, Benjamin and Romero,
Jacquiline and Silberhorn, Christine}, year={2025} }'
chicago: Serino, Laura Maria, Markus Rambach, Benjamin Brecht, Jacquiline Romero,
and Christine Silberhorn. “Self-Guided Tomography of Time-Frequency Qudits.” Quantum
Science and Technology 10, no. 2 (2025). https://doi.org/10.1088/2058-9565/adb0ea.
ieee: 'L. M. Serino, M. Rambach, B. Brecht, J. Romero, and C. Silberhorn, “Self-guided
tomography of time-frequency qudits,” Quantum Science and Technology, vol.
10, no. 2, Art. no. 025024, 2025, doi: 10.1088/2058-9565/adb0ea.'
mla: Serino, Laura Maria, et al. “Self-Guided Tomography of Time-Frequency Qudits.”
Quantum Science and Technology, vol. 10, no. 2, 025024, IOP Publishing,
2025, doi:10.1088/2058-9565/adb0ea.
short: L.M. Serino, M. Rambach, B. Brecht, J. Romero, C. Silberhorn, Quantum Science
and Technology 10 (2025).
date_created: 2025-12-18T16:07:11Z
date_updated: 2025-12-18T16:07:35Z
department:
- _id: '15'
- _id: '623'
doi: 10.1088/2058-9565/adb0ea
intvolume: ' 10'
issue: '2'
language:
- iso: eng
publication: Quantum Science and Technology
publication_identifier:
issn:
- 2058-9565
publication_status: published
publisher: IOP Publishing
status: public
title: Self-guided tomography of time-frequency qudits
type: journal_article
user_id: '27150'
volume: 10
year: '2025'
...
---
_id: '57089'
author:
- first_name: Stephan
full_name: Kruse, Stephan
id: '38254'
last_name: Kruse
- first_name: Benjamin
full_name: Brecht, Benjamin
id: '27150'
last_name: Brecht
orcid: '0000-0003-4140-0556 '
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
- first_name: Laura Maria
full_name: Serino, Laura Maria
id: '88242'
last_name: Serino
citation:
ama: Kruse S, Brecht B, Silberhorn C, Serino LM. Quantenoptisch-unterstütztes Sende-/Empfangssystem.
Published online 2024.
apa: Kruse, S., Brecht, B., Silberhorn, C., & Serino, L. M. (2024). Quantenoptisch-unterstütztes
Sende-/Empfangssystem.
bibtex: '@article{Kruse_Brecht_Silberhorn_Serino_2024, title={Quantenoptisch-unterstütztes
Sende-/Empfangssystem}, author={Kruse, Stephan and Brecht, Benjamin and Silberhorn,
Christine and Serino, Laura Maria}, year={2024} }'
chicago: Kruse, Stephan, Benjamin Brecht, Christine Silberhorn, and Laura Maria
Serino. “Quantenoptisch-Unterstütztes Sende-/Empfangssystem,” 2024.
ieee: S. Kruse, B. Brecht, C. Silberhorn, and L. M. Serino, “Quantenoptisch-unterstütztes
Sende-/Empfangssystem.” 2024.
mla: Kruse, Stephan, et al. Quantenoptisch-Unterstütztes Sende-/Empfangssystem.
2024.
short: S. Kruse, B. Brecht, C. Silberhorn, L.M. Serino, (2024).
date_created: 2024-11-14T16:11:10Z
date_updated: 2024-11-15T13:58:41Z
department:
- _id: '623'
- _id: '58'
ipc: G01S 7/481
ipn: 10 2023 203 697.5
publication_date: 2024-10-24
status: public
title: Quantenoptisch-unterstütztes Sende-/Empfangssystem
type: patent
user_id: '38254'
year: '2024'
...
---
_id: '56267'
author:
- first_name: Laura
full_name: Serino, Laura
id: '88242'
last_name: Serino
- first_name: Werner
full_name: Ridder, Werner
id: '63574'
last_name: Ridder
- first_name: Abhinandan
full_name: Bhattacharjee, Abhinandan
id: '95902'
last_name: Bhattacharjee
- first_name: Jano
full_name: Gil López, Jano
id: '51223'
last_name: Gil López
- first_name: Benjamin
full_name: Brecht, Benjamin
id: '27150'
last_name: Brecht
orcid: '0000-0003-4140-0556 '
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: 'Serino L, Ridder W, Bhattacharjee A, Gil López J, Brecht B, Silberhorn C.
Orchestrating time and color: a programmable source of high-dimensional entanglement.
Optica Quantum. Published online 2024. doi:10.1364/opticaq.532334'
apa: 'Serino, L., Ridder, W., Bhattacharjee, A., Gil López, J., Brecht, B., &
Silberhorn, C. (2024). Orchestrating time and color: a programmable source of
high-dimensional entanglement. Optica Quantum. https://doi.org/10.1364/opticaq.532334'
bibtex: '@article{Serino_Ridder_Bhattacharjee_Gil López_Brecht_Silberhorn_2024,
title={Orchestrating time and color: a programmable source of high-dimensional
entanglement}, DOI={10.1364/opticaq.532334},
journal={Optica Quantum}, publisher={Optica Publishing Group}, author={Serino,
Laura and Ridder, Werner and Bhattacharjee, Abhinandan and Gil López, Jano and
Brecht, Benjamin and Silberhorn, Christine}, year={2024} }'
chicago: 'Serino, Laura, Werner Ridder, Abhinandan Bhattacharjee, Jano Gil López,
Benjamin Brecht, and Christine Silberhorn. “Orchestrating Time and Color: A Programmable
Source of High-Dimensional Entanglement.” Optica Quantum, 2024. https://doi.org/10.1364/opticaq.532334.'
ieee: 'L. Serino, W. Ridder, A. Bhattacharjee, J. Gil López, B. Brecht, and C. Silberhorn,
“Orchestrating time and color: a programmable source of high-dimensional entanglement,”
Optica Quantum, 2024, doi: 10.1364/opticaq.532334.'
mla: 'Serino, Laura, et al. “Orchestrating Time and Color: A Programmable Source
of High-Dimensional Entanglement.” Optica Quantum, Optica Publishing Group,
2024, doi:10.1364/opticaq.532334.'
short: L. Serino, W. Ridder, A. Bhattacharjee, J. Gil López, B. Brecht, C. Silberhorn,
Optica Quantum (2024).
date_created: 2024-09-27T11:46:59Z
date_updated: 2025-12-01T08:49:46Z
department:
- _id: '288'
- _id: '623'
- _id: '288'
doi: 10.1364/opticaq.532334
language:
- iso: eng
project:
- _id: '211'
name: 'QuICHE: Quanteninformation und Quantenkommunikation mit hochdimensionaler
Informationskodierung (QuICHE)'
publication: Optica Quantum
publication_identifier:
issn:
- 2837-6714
publication_status: published
publisher: Optica Publishing Group
status: public
title: 'Orchestrating time and color: a programmable source of high-dimensional entanglement'
type: journal_article
user_id: '63574'
year: '2024'
...
---
_id: '63216'
abstract:
- lang: eng
text: The characterization of the complex spectral amplitude, that is, the
spectrum and spectral phase, of single-photon-level light fields is a crucial
capability for modern photonic quantum technologies. Since established pulse characterization
techniques are not applicable at low intensities, alternative approaches are required.
Here, we demonstrate the retrieval of the complex spectral amplitude of single-photon-level
light pulses through measuring their chronocyclic Q −function.
Our approach draws inspiration from quantum state tomography by exploiting the
analogy between quadrature phase space and time-frequency phase space. In the
experiment, we perform time-frequency projections with a quantum pulse gate (QPG),
which directly yield the chronocyclic Q −function.
We evaluate the complex spectral amplitude from the measured chronocyclic Q −function data with maximum likelihood estimation
(MLE), which is the established technique for quantum state tomography. The MLE
yields not only an unambigious estimate of the complex spectral amplitude of the
state under test that does not require any a priori
information, but also allows for, in principle, estimating the spectral-temporal
coherence properties of the state. Our method accurately recovers features such
as jumps in the spectral phase and is resistant against regions with zero spectral
intensity, which makes it immediately beneficial for classical pulse characterization
problems.
article_number: '5551'
author:
- first_name: Abhinandan
full_name: Bhattacharjee, Abhinandan
id: '95902'
last_name: Bhattacharjee
- first_name: Patrick Fabian
full_name: Folge, Patrick Fabian
id: '88605'
last_name: Folge
- first_name: Laura Maria
full_name: Serino, Laura Maria
id: '88242'
last_name: Serino
- first_name: Jaroslav
full_name: Řeháček, Jaroslav
last_name: Řeháček
- first_name: Zdeněk
full_name: Hradil, Zdeněk
last_name: Hradil
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
- first_name: Benjamin
full_name: Brecht, Benjamin
id: '27150'
last_name: Brecht
orcid: '0000-0003-4140-0556 '
citation:
ama: Bhattacharjee A, Folge PF, Serino LM, et al. Pulse characterization at the
single-photon level through chronocyclic Q-function measurements. Optics
Express. 2024;33(3). doi:10.1364/oe.540125
apa: Bhattacharjee, A., Folge, P. F., Serino, L. M., Řeháček, J., Hradil, Z., Silberhorn,
C., & Brecht, B. (2024). Pulse characterization at the single-photon level
through chronocyclic Q-function measurements. Optics Express, 33(3),
Article 5551. https://doi.org/10.1364/oe.540125
bibtex: '@article{Bhattacharjee_Folge_Serino_Řeháček_Hradil_Silberhorn_Brecht_2024,
title={Pulse characterization at the single-photon level through chronocyclic
Q-function measurements}, volume={33}, DOI={10.1364/oe.540125},
number={35551}, journal={Optics Express}, publisher={Optica Publishing Group},
author={Bhattacharjee, Abhinandan and Folge, Patrick Fabian and Serino, Laura
Maria and Řeháček, Jaroslav and Hradil, Zdeněk and Silberhorn, Christine and Brecht,
Benjamin}, year={2024} }'
chicago: Bhattacharjee, Abhinandan, Patrick Fabian Folge, Laura Maria Serino, Jaroslav
Řeháček, Zdeněk Hradil, Christine Silberhorn, and Benjamin Brecht. “Pulse Characterization
at the Single-Photon Level through Chronocyclic Q-Function Measurements.”
Optics Express 33, no. 3 (2024). https://doi.org/10.1364/oe.540125.
ieee: 'A. Bhattacharjee et al., “Pulse characterization at the single-photon
level through chronocyclic Q-function measurements,” Optics Express,
vol. 33, no. 3, Art. no. 5551, 2024, doi: 10.1364/oe.540125.'
mla: Bhattacharjee, Abhinandan, et al. “Pulse Characterization at the Single-Photon
Level through Chronocyclic Q-Function Measurements.” Optics Express,
vol. 33, no. 3, 5551, Optica Publishing Group, 2024, doi:10.1364/oe.540125.
short: A. Bhattacharjee, P.F. Folge, L.M. Serino, J. Řeháček, Z. Hradil, C. Silberhorn,
B. Brecht, Optics Express 33 (2024).
date_created: 2025-12-18T16:08:16Z
date_updated: 2025-12-18T16:08:40Z
department:
- _id: '15'
- _id: '623'
doi: 10.1364/oe.540125
intvolume: ' 33'
issue: '3'
language:
- iso: eng
publication: Optics Express
publication_identifier:
issn:
- 1094-4087
publication_status: published
publisher: Optica Publishing Group
status: public
title: Pulse characterization at the single-photon level through chronocyclic Q-function
measurements
type: journal_article
user_id: '27150'
volume: 33
year: '2024'
...
---
_id: '63217'
abstract:
- lang: eng
text: We demonstrate a high-dimensional mode-sorter for single photons based
on a multi-output quantum pulse gate, which we can program to switch between different
temporal-mode encodings including pulse modes, frequency bins, time bins, and
their superpositions. This device can facilitate practical realizations of quantum
information applications such as high-dimensional quantum key distribution and
thus enables secure communication with enhanced information capacity. We characterize
the mode-sorter through a detector tomography in 3 and 5 dimensions and find a
fidelity up to 0.958 ± 0.030 at the single-photon level.
article_number: '5577'
author:
- first_name: Laura Maria
full_name: Serino, Laura Maria
id: '88242'
last_name: Serino
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Benjamin
full_name: Brecht, Benjamin
id: '27150'
last_name: Brecht
orcid: '0000-0003-4140-0556 '
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: Serino LM, Eigner C, Brecht B, Silberhorn C. Programmable time-frequency mode-sorting
of single photons with a multi-output quantum pulse gate. Optics Express.
2024;33(3). doi:10.1364/oe.544206
apa: Serino, L. M., Eigner, C., Brecht, B., & Silberhorn, C. (2024). Programmable
time-frequency mode-sorting of single photons with a multi-output quantum pulse
gate. Optics Express, 33(3), Article 5577. https://doi.org/10.1364/oe.544206
bibtex: '@article{Serino_Eigner_Brecht_Silberhorn_2024, title={Programmable time-frequency
mode-sorting of single photons with a multi-output quantum pulse gate}, volume={33},
DOI={10.1364/oe.544206}, number={35577},
journal={Optics Express}, publisher={Optica Publishing Group}, author={Serino,
Laura Maria and Eigner, Christof and Brecht, Benjamin and Silberhorn, Christine},
year={2024} }'
chicago: Serino, Laura Maria, Christof Eigner, Benjamin Brecht, and Christine Silberhorn.
“Programmable Time-Frequency Mode-Sorting of Single Photons with a Multi-Output
Quantum Pulse Gate.” Optics Express 33, no. 3 (2024). https://doi.org/10.1364/oe.544206.
ieee: 'L. M. Serino, C. Eigner, B. Brecht, and C. Silberhorn, “Programmable time-frequency
mode-sorting of single photons with a multi-output quantum pulse gate,” Optics
Express, vol. 33, no. 3, Art. no. 5577, 2024, doi: 10.1364/oe.544206.'
mla: Serino, Laura Maria, et al. “Programmable Time-Frequency Mode-Sorting of Single
Photons with a Multi-Output Quantum Pulse Gate.” Optics Express, vol. 33,
no. 3, 5577, Optica Publishing Group, 2024, doi:10.1364/oe.544206.
short: L.M. Serino, C. Eigner, B. Brecht, C. Silberhorn, Optics Express 33 (2024).
date_created: 2025-12-18T16:09:22Z
date_updated: 2025-12-18T16:09:44Z
department:
- _id: '15'
- _id: '623'
doi: 10.1364/oe.544206
intvolume: ' 33'
issue: '3'
language:
- iso: eng
publication: Optics Express
publication_identifier:
issn:
- 1094-4087
publication_status: published
publisher: Optica Publishing Group
status: public
title: Programmable time-frequency mode-sorting of single photons with a multi-output
quantum pulse gate
type: journal_article
user_id: '27150'
volume: 33
year: '2024'
...
---
_id: '45485'
author:
- first_name: Stephan
full_name: Kruse, Stephan
id: '38254'
last_name: Kruse
- first_name: Laura
full_name: Serino, Laura
id: '88242'
last_name: Serino
- first_name: Patrick Fabian
full_name: Folge, Patrick Fabian
id: '88605'
last_name: Folge
- first_name: Dana
full_name: Echeverria Oviedo, Dana
last_name: Echeverria Oviedo
- first_name: Abhinandan
full_name: Bhattacharjee, Abhinandan
last_name: Bhattacharjee
- first_name: Michael
full_name: Stefszky, Michael
id: '42777'
last_name: Stefszky
- first_name: J. Christoph
full_name: Scheytt, J. Christoph
id: '37144'
last_name: Scheytt
orcid: '0000-0002-5950-6618 '
- first_name: Benjamin
full_name: Brecht, Benjamin
id: '27150'
last_name: Brecht
orcid: '0000-0003-4140-0556 '
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: Kruse S, Serino L, Folge PF, et al. A Pulsed Lidar System With Ultimate Quantum
Range Accuracy. IEEE Photonics Technology Letters. 2023;35(14):769-772.
doi:10.1109/lpt.2023.3277515
apa: Kruse, S., Serino, L., Folge, P. F., Echeverria Oviedo, D., Bhattacharjee,
A., Stefszky, M., Scheytt, J. C., Brecht, B., & Silberhorn, C. (2023). A Pulsed
Lidar System With Ultimate Quantum Range Accuracy. IEEE Photonics Technology
Letters, 35(14), 769–772. https://doi.org/10.1109/lpt.2023.3277515
bibtex: '@article{Kruse_Serino_Folge_Echeverria Oviedo_Bhattacharjee_Stefszky_Scheytt_Brecht_Silberhorn_2023,
title={A Pulsed Lidar System With Ultimate Quantum Range Accuracy}, volume={35},
DOI={10.1109/lpt.2023.3277515},
number={14}, journal={IEEE Photonics Technology Letters}, publisher={Institute
of Electrical and Electronics Engineers (IEEE)}, author={Kruse, Stephan and Serino,
Laura and Folge, Patrick Fabian and Echeverria Oviedo, Dana and Bhattacharjee,
Abhinandan and Stefszky, Michael and Scheytt, J. Christoph and Brecht, Benjamin
and Silberhorn, Christine}, year={2023}, pages={769–772} }'
chicago: 'Kruse, Stephan, Laura Serino, Patrick Fabian Folge, Dana Echeverria Oviedo,
Abhinandan Bhattacharjee, Michael Stefszky, J. Christoph Scheytt, Benjamin Brecht,
and Christine Silberhorn. “A Pulsed Lidar System With Ultimate Quantum Range Accuracy.”
IEEE Photonics Technology Letters 35, no. 14 (2023): 769–72. https://doi.org/10.1109/lpt.2023.3277515.'
ieee: 'S. Kruse et al., “A Pulsed Lidar System With Ultimate Quantum Range
Accuracy,” IEEE Photonics Technology Letters, vol. 35, no. 14, pp. 769–772,
2023, doi: 10.1109/lpt.2023.3277515.'
mla: Kruse, Stephan, et al. “A Pulsed Lidar System With Ultimate Quantum Range Accuracy.”
IEEE Photonics Technology Letters, vol. 35, no. 14, Institute of Electrical
and Electronics Engineers (IEEE), 2023, pp. 769–72, doi:10.1109/lpt.2023.3277515.
short: S. Kruse, L. Serino, P.F. Folge, D. Echeverria Oviedo, A. Bhattacharjee,
M. Stefszky, J.C. Scheytt, B. Brecht, C. Silberhorn, IEEE Photonics Technology
Letters 35 (2023) 769–772.
date_created: 2023-06-06T10:09:05Z
date_updated: 2023-06-06T10:13:05Z
department:
- _id: '15'
- _id: '58'
- _id: '623'
- _id: '230'
- _id: '288'
doi: 10.1109/lpt.2023.3277515
intvolume: ' 35'
issue: '14'
keyword:
- Electrical and Electronic Engineering
- Atomic and Molecular Physics
- and Optics
- Electronic
- Optical and Magnetic Materials
language:
- iso: eng
page: 769-772
publication: IEEE Photonics Technology Letters
publication_identifier:
issn:
- 1041-1135
- 1941-0174
publication_status: published
publisher: Institute of Electrical and Electronics Engineers (IEEE)
status: public
title: A Pulsed Lidar System With Ultimate Quantum Range Accuracy
type: journal_article
user_id: '27150'
volume: 35
year: '2023'
...
---
_id: '44081'
article_number: '020306'
author:
- first_name: Laura
full_name: Serino, Laura
id: '88242'
last_name: Serino
- first_name: Jano
full_name: Gil López, Jano
id: '51223'
last_name: Gil López
- first_name: Michael
full_name: Stefszky, Michael
id: '42777'
last_name: Stefszky
- first_name: Raimund
full_name: Ricken, Raimund
last_name: Ricken
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Benjamin
full_name: Brecht, Benjamin
id: '27150'
last_name: Brecht
orcid: '0000-0003-4140-0556 '
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: Serino L, Gil López J, Stefszky M, et al. Realization of a Multi-Output Quantum
Pulse Gate for Decoding High-Dimensional Temporal Modes of Single-Photon States.
PRX Quantum. 2023;4(2). doi:10.1103/prxquantum.4.020306
apa: Serino, L., Gil López, J., Stefszky, M., Ricken, R., Eigner, C., Brecht, B.,
& Silberhorn, C. (2023). Realization of a Multi-Output Quantum Pulse Gate
for Decoding High-Dimensional Temporal Modes of Single-Photon States. PRX Quantum,
4(2), Article 020306. https://doi.org/10.1103/prxquantum.4.020306
bibtex: '@article{Serino_Gil López_Stefszky_Ricken_Eigner_Brecht_Silberhorn_2023,
title={Realization of a Multi-Output Quantum Pulse Gate for Decoding High-Dimensional
Temporal Modes of Single-Photon States}, volume={4}, DOI={10.1103/prxquantum.4.020306},
number={2020306}, journal={PRX Quantum}, publisher={American Physical Society
(APS)}, author={Serino, Laura and Gil López, Jano and Stefszky, Michael and Ricken,
Raimund and Eigner, Christof and Brecht, Benjamin and Silberhorn, Christine},
year={2023} }'
chicago: Serino, Laura, Jano Gil López, Michael Stefszky, Raimund Ricken, Christof
Eigner, Benjamin Brecht, and Christine Silberhorn. “Realization of a Multi-Output
Quantum Pulse Gate for Decoding High-Dimensional Temporal Modes of Single-Photon
States.” PRX Quantum 4, no. 2 (2023). https://doi.org/10.1103/prxquantum.4.020306.
ieee: 'L. Serino et al., “Realization of a Multi-Output Quantum Pulse Gate
for Decoding High-Dimensional Temporal Modes of Single-Photon States,” PRX
Quantum, vol. 4, no. 2, Art. no. 020306, 2023, doi: 10.1103/prxquantum.4.020306.'
mla: Serino, Laura, et al. “Realization of a Multi-Output Quantum Pulse Gate for
Decoding High-Dimensional Temporal Modes of Single-Photon States.” PRX Quantum,
vol. 4, no. 2, 020306, American Physical Society (APS), 2023, doi:10.1103/prxquantum.4.020306.
short: L. Serino, J. Gil López, M. Stefszky, R. Ricken, C. Eigner, B. Brecht, C.
Silberhorn, PRX Quantum 4 (2023).
date_created: 2023-04-20T12:38:23Z
date_updated: 2025-12-18T16:15:18Z
department:
- _id: '288'
- _id: '623'
- _id: '15'
doi: 10.1103/prxquantum.4.020306
intvolume: ' 4'
issue: '2'
keyword:
- General Physics and Astronomy
- Mathematical Physics
- Applied Mathematics
- Electronic
- Optical and Magnetic Materials
- Electrical and Electronic Engineering
- General Computer Science
language:
- iso: eng
publication: PRX Quantum
publication_identifier:
issn:
- 2691-3399
publication_status: published
publisher: American Physical Society (APS)
status: public
title: Realization of a Multi-Output Quantum Pulse Gate for Decoding High-Dimensional
Temporal Modes of Single-Photon States
type: journal_article
user_id: '27150'
volume: 4
year: '2023'
...