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Continuous-variable quantum key distribution using thermal states

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Continuous-variable quantum key distribution using thermal states. / Weedbrook, Christian; Pirandola, Stefano; Ralph, Timothy C.

In: Physical Review A, Vol. 86, No. 2, 022318, 17.08.2012, p. -.

Research output: Contribution to journalArticle

Harvard

Weedbrook, C, Pirandola, S & Ralph, TC 2012, 'Continuous-variable quantum key distribution using thermal states', Physical Review A, vol. 86, no. 2, 022318, pp. -. https://doi.org/10.1103/PhysRevA.86.022318

APA

Weedbrook, C., Pirandola, S., & Ralph, T. C. (2012). Continuous-variable quantum key distribution using thermal states. Physical Review A, 86(2), -. [022318]. https://doi.org/10.1103/PhysRevA.86.022318

Vancouver

Weedbrook C, Pirandola S, Ralph TC. Continuous-variable quantum key distribution using thermal states. Physical Review A. 2012 Aug 17;86(2):-. 022318. https://doi.org/10.1103/PhysRevA.86.022318

Author

Weedbrook, Christian ; Pirandola, Stefano ; Ralph, Timothy C. / Continuous-variable quantum key distribution using thermal states. In: Physical Review A. 2012 ; Vol. 86, No. 2. pp. -.

Bibtex - Download

@article{d17c5b8a52074c3a95c1339aa670e110,
title = "Continuous-variable quantum key distribution using thermal states",
abstract = "We consider the security of continuous-variable quantum key distribution using thermal (or noisy) Gaussian resource states. Specifically, we analyze this against collective Gaussian attacks using direct and reverse reconciliation where both protocols use either homodyne or heterodyne detection. We show that in the case of direct reconciliation with heterodyne detection, an improved robustness to channel noise is achieved when large amounts of preparation noise is added, as compared to the case when no preparation noise is added. We also consider the theoretical limit of infinite preparation noise and show a secure key can still be achieved in this limit provided the channel noise is less than the preparation noise. Finally, we consider the security of quantum key distribution at various electromagnetic wavelengths and derive an upper bound related to an entanglement-breaking eavesdropping attack and discuss the feasibility of microwave quantum key distribution.",
author = "Christian Weedbrook and Stefano Pirandola and Ralph, {Timothy C.}",
year = "2012",
month = aug,
day = "17",
doi = "10.1103/PhysRevA.86.022318",
language = "English",
volume = "86",
pages = "--",
journal = "Physical Review A",
issn = "1050-2947",
publisher = "American Physical Society",
number = "2",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Continuous-variable quantum key distribution using thermal states

AU - Weedbrook, Christian

AU - Pirandola, Stefano

AU - Ralph, Timothy C.

PY - 2012/8/17

Y1 - 2012/8/17

N2 - We consider the security of continuous-variable quantum key distribution using thermal (or noisy) Gaussian resource states. Specifically, we analyze this against collective Gaussian attacks using direct and reverse reconciliation where both protocols use either homodyne or heterodyne detection. We show that in the case of direct reconciliation with heterodyne detection, an improved robustness to channel noise is achieved when large amounts of preparation noise is added, as compared to the case when no preparation noise is added. We also consider the theoretical limit of infinite preparation noise and show a secure key can still be achieved in this limit provided the channel noise is less than the preparation noise. Finally, we consider the security of quantum key distribution at various electromagnetic wavelengths and derive an upper bound related to an entanglement-breaking eavesdropping attack and discuss the feasibility of microwave quantum key distribution.

AB - We consider the security of continuous-variable quantum key distribution using thermal (or noisy) Gaussian resource states. Specifically, we analyze this against collective Gaussian attacks using direct and reverse reconciliation where both protocols use either homodyne or heterodyne detection. We show that in the case of direct reconciliation with heterodyne detection, an improved robustness to channel noise is achieved when large amounts of preparation noise is added, as compared to the case when no preparation noise is added. We also consider the theoretical limit of infinite preparation noise and show a secure key can still be achieved in this limit provided the channel noise is less than the preparation noise. Finally, we consider the security of quantum key distribution at various electromagnetic wavelengths and derive an upper bound related to an entanglement-breaking eavesdropping attack and discuss the feasibility of microwave quantum key distribution.

UR - http://www.scopus.com/inward/record.url?scp=84865277420&partnerID=8YFLogxK

U2 - 10.1103/PhysRevA.86.022318

DO - 10.1103/PhysRevA.86.022318

M3 - Article

VL - 86

SP - -

JO - Physical Review A

JF - Physical Review A

SN - 1050-2947

IS - 2

M1 - 022318

ER -