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Quantum key distribution with phase-encoded coherent states: Asymptotic security analysis in thermal-loss channels

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Quantum key distribution with phase-encoded coherent states : Asymptotic security analysis in thermal-loss channels. / Papanastasiou, Panagiotis; Lupo, Cosmo; Weedbrook, Christian; Pirandola, Stefano.

In: Phys. Rev. A, Vol. 98, 012340, 31.07.2018, p. 1-8.

Research output: Contribution to journalArticle

Harvard

Papanastasiou, P, Lupo, C, Weedbrook, C & Pirandola, S 2018, 'Quantum key distribution with phase-encoded coherent states: Asymptotic security analysis in thermal-loss channels', Phys. Rev. A, vol. 98, 012340, pp. 1-8. https://doi.org/10.1103/PhysRevA.98.012340

APA

Papanastasiou, P., Lupo, C., Weedbrook, C., & Pirandola, S. (2018). Quantum key distribution with phase-encoded coherent states: Asymptotic security analysis in thermal-loss channels. Phys. Rev. A, 98, 1-8. [012340]. https://doi.org/10.1103/PhysRevA.98.012340

Vancouver

Papanastasiou P, Lupo C, Weedbrook C, Pirandola S. Quantum key distribution with phase-encoded coherent states: Asymptotic security analysis in thermal-loss channels. Phys. Rev. A. 2018 Jul 31;98:1-8. 012340. https://doi.org/10.1103/PhysRevA.98.012340

Author

Papanastasiou, Panagiotis ; Lupo, Cosmo ; Weedbrook, Christian ; Pirandola, Stefano. / Quantum key distribution with phase-encoded coherent states : Asymptotic security analysis in thermal-loss channels. In: Phys. Rev. A. 2018 ; Vol. 98. pp. 1-8.

Bibtex - Download

@article{c14ea3356cf745d4ace58613f9ef9378,
title = "Quantum key distribution with phase-encoded coherent states: Asymptotic security analysis in thermal-loss channels",
abstract = "We consider discrete-alphabet encoding schemes for coherent-state quantum key distribution. The sender encodes the letters of a finite-size alphabet into coherent states whose amplitudes are symmetrically distributed on a circle centered in the origin of the phase space. We study the asymptotic performance of this phase-encoded coherent-state protocol in direct and reverse reconciliation assuming both loss and thermal noise in the communication channel. In particular, we show that using just four phase-shifted coherent states is sufficient for generating secret key rates of the order of $4 \times 10^{-3}$ bits per channel use at about 15 dB loss in the presence of realistic excess noise.",
keywords = "quant-ph, physics.optics",
author = "Panagiotis Papanastasiou and Cosmo Lupo and Christian Weedbrook and Stefano Pirandola",
note = "{\circledC}2018 American Physical Society. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details. REVTeX. 8 pages. 7 figures",
year = "2018",
month = "7",
day = "31",
doi = "10.1103/PhysRevA.98.012340",
language = "English",
volume = "98",
pages = "1--8",
journal = "Phys. Rev. A",
publisher = "American Physical Society",

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RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Quantum key distribution with phase-encoded coherent states

T2 - Asymptotic security analysis in thermal-loss channels

AU - Papanastasiou, Panagiotis

AU - Lupo, Cosmo

AU - Weedbrook, Christian

AU - Pirandola, Stefano

N1 - ©2018 American Physical Society. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details. REVTeX. 8 pages. 7 figures

PY - 2018/7/31

Y1 - 2018/7/31

N2 - We consider discrete-alphabet encoding schemes for coherent-state quantum key distribution. The sender encodes the letters of a finite-size alphabet into coherent states whose amplitudes are symmetrically distributed on a circle centered in the origin of the phase space. We study the asymptotic performance of this phase-encoded coherent-state protocol in direct and reverse reconciliation assuming both loss and thermal noise in the communication channel. In particular, we show that using just four phase-shifted coherent states is sufficient for generating secret key rates of the order of $4 \times 10^{-3}$ bits per channel use at about 15 dB loss in the presence of realistic excess noise.

AB - We consider discrete-alphabet encoding schemes for coherent-state quantum key distribution. The sender encodes the letters of a finite-size alphabet into coherent states whose amplitudes are symmetrically distributed on a circle centered in the origin of the phase space. We study the asymptotic performance of this phase-encoded coherent-state protocol in direct and reverse reconciliation assuming both loss and thermal noise in the communication channel. In particular, we show that using just four phase-shifted coherent states is sufficient for generating secret key rates of the order of $4 \times 10^{-3}$ bits per channel use at about 15 dB loss in the presence of realistic excess noise.

KW - quant-ph

KW - physics.optics

U2 - 10.1103/PhysRevA.98.012340

DO - 10.1103/PhysRevA.98.012340

M3 - Article

VL - 98

SP - 1

EP - 8

JO - Phys. Rev. A

JF - Phys. Rev. A

M1 - 012340

ER -