Model for optimizing quantum key distribution with
continuous-wave pumped entangled-photon sources

J 2021

Model for optimizing quantum key distribution with continuous-wave pumped entangled-photon sources

NEUMANN, S.P., T. SCHEIDL, M. SELIMOVIC, Matej PIVOLUSKA, B. LIU et. al.

Základní údaje

Originální název

Model for optimizing quantum key distribution with continuous-wave pumped entangled-photon sources

Autoři

NEUMANN, S.P., T. SCHEIDL, M. SELIMOVIC, Matej PIVOLUSKA (703 Slovensko, domácí), B. LIU, M. BOHMANN a R. URSIN

Vydání

Physical review A, New York, The American Physical Society, 2021, 2469-9926

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10306 Optics

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 2.971

Kód RIV

RIV/00216224:14610/21:00122150

Organizační jednotka

Ústav výpočetní techniky

DOI

http://dx.doi.org/10.1103/PhysRevA.104.022406

UT WoS

000681426600003

Klíčová slova anglicky

quantum key distribution; entanglement; continuous wave sources

Štítky

J-D1, J-Q1, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 28. 4. 2022 11:16, Mgr. Alena Mokrá

Anotace

V originále

Quantum key distribution (QKD) allows unconditionally secure communication based on the laws of quantum mechanics rather than assumptions about computational hardness. Optimizing the operation parameters of a given QKD implementation is indispensable in order to achieve high secure key rates. So far, there exists no model that accurately describes entanglement-based QKD with continuous-wave pump lasers. We analyze the underlying mechanisms for QKD with temporally uniform pair-creation probabilities and develop a simple but accurate model to calculate optimal tradeoffs for maximal secure key rates. In particular, we find an optimization strategy of the source brightness for given losses and detection-time resolution. All experimental parameters utilized by the model can be inferred directly in standard QKD implementations, and no additional assessment of device performance is required. Comparison with experimental data shows the validity of our model. Our results yield a tool to determine optimal operation parameters for already existing QKD systems, to plan a full QKD implementation from scratch, and to determine fundamental key rate and distance limits of given connections.

Návaznosti

MUNI/G/1596/2019, interní kód MU

Název: Development of algorithms for application of quantum computers in electronic-structure calculations in solid-state physics and chemistry (Akronym: Qubits4PhysChem)

Investor: Masarykova univerzita, Development of algorithms for application of quantum computers in electronic-structure calculations in solid-state physics and chemistry, INTERDISCIPLINARY - Mezioborové výzkumné projekty

Citovat

NEUMANN, S.P., T. SCHEIDL, M. SELIMOVIC, Matej PIVOLUSKA, B. LIU, M. BOHMANN a R. URSIN. Model for optimizing quantum key distribution with continuous-wave pumped entangled-photon sources. Physical review A. New York: The American Physical Society, 2021, roč. 104, č. 2, s. 022406-22416. ISSN 2469-9926. Dostupné z: https://dx.doi.org/10.1103/PhysRevA.104.022406.

@article{1787480,
   author = {Neumann, S.P. and Scheidl, T. and Selimovic, M. and Pivoluska, Matej and Liu, B. and Bohmann, M. and Ursin, R.},
   article_location = {New York},
   article_number = {2},
   doi = {http://dx.doi.org/10.1103/PhysRevA.104.022406},
   keywords = {quantum key distribution; entanglement; continuous wave sources},
   language = {eng},
   issn = {2469-9926},
   journal = {Physical review A},
   title = {Model for optimizing quantum key distribution with continuous-wave pumped entangled-photon sources},
   url = {https://journals.aps.org/pra/abstract/10.1103/PhysRevA.104.022406},
   volume = {104},
   year = {2021}
}

TY  - JOUR
ID  - 1787480
AU  - Neumann, S.P. - Scheidl, T. - Selimovic, M. - Pivoluska, Matej - Liu, B. - Bohmann, M. - Ursin, R.
PY  - 2021
TI  - Model for optimizing quantum key distribution with continuous-wave pumped entangled-photon sources
JF  - Physical review A
VL  - 104
IS  - 2
SP  - 022406
EP  - 022406
PB  - The American Physical Society
SN  - 24699926
KW  - quantum key distribution
KW  - entanglement
KW  - continuous wave sources
UR  - https://journals.aps.org/pra/abstract/10.1103/PhysRevA.104.022406
N2  - Quantum key distribution (QKD) allows unconditionally secure communication based on the laws of quantum mechanics rather than assumptions about computational hardness. Optimizing the operation parameters of a given QKD implementation is indispensable in order to achieve high secure key rates. So far, there exists no model that accurately describes entanglement-based QKD with continuous-wave pump lasers. We analyze the underlying mechanisms for QKD with temporally uniform pair-creation probabilities and develop a simple but accurate model to calculate optimal tradeoffs for maximal secure key rates. In particular, we find an optimization strategy of the source brightness for given losses and detection-time resolution. All experimental parameters utilized by the model can be inferred directly in standard QKD implementations, and no additional assessment of device performance is required. Comparison with experimental data shows the validity of our model. Our results yield a tool to determine optimal operation parameters for already existing QKD systems, to plan a full QKD implementation from scratch, and to determine fundamental key rate and distance limits of given connections.
ER  -

NEUMANN, S.P., T. SCHEIDL, M. SELIMOVIC, Matej PIVOLUSKA, B. LIU, M. BOHMANN a R. URSIN. Model for optimizing quantum key distribution with continuous-wave pumped entangled-photon sources. \textit{Physical review A}. New York: The American Physical Society, 2021, roč.~104, č.~2, s.~022406-22416. ISSN~2469-9926. Dostupné z: https://dx.doi.org/10.1103/PhysRevA.104.022406.

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