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.

Basic information

Original name

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

Authors

NEUMANN, S.P., T. SCHEIDL, M. SELIMOVIC, Matej PIVOLUSKA (703 Slovakia, belonging to the institution), B. LIU, M. BOHMANN and R. URSIN

Edition

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

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10306 Optics

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

URL

Impact factor

Impact factor: 2.971

RIV identification code

RIV/00216224:14610/21:00122150

Organization unit

Institute of Computer Science

DOI

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

UT WoS

000681426600003

Keywords in English

quantum key distribution; entanglement; continuous wave sources

Abstract

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.

Links

MUNI/G/1596/2019, interní kód MU

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

Investor: Masaryk University, INTERDISCIPLINARY - Interdisciplinary research projects

Citovat

NEUMANN, S.P., T. SCHEIDL, M. SELIMOVIC, Matej PIVOLUSKA, B. LIU, M. BOHMANN and 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, vol. 104, No 2, p. 022406-22416. ISSN 2469-9926. Available from: 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 and 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, vol.~104, No~2, p.~022406-22416. ISSN~2469-9926. Available from: https://dx.doi.org/10.1103/PhysRevA.104.022406.

Detailed Information on Publication Record