Details
| Original language | English |
|---|---|
| Pages (from-to) | 100502 |
| Number of pages | 1 |
| Journal | Phys. Rev. Lett. |
| Volume | 109 |
| Publication status | Published - 2012 |
Abstract
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In: Phys. Rev. Lett., Vol. 109, 2012, p. 100502.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Continuous Variable Quantum Key Distribution: Finite-Key Analysis of Composable Security against Coherent Attacks
AU - Furrer, Fabian
AU - Franz, Torsten
AU - Berta, Mario
AU - Leverrier, Anthony
AU - Scholz, Volkher B.
AU - Tomamichel, Marco
AU - Werner, Reinhard F.
PY - 2012
Y1 - 2012
N2 - We provide a security analysis for continuous variable quantum key distribution protocols based on the transmission of squeezed vacuum states measured via homodyne detection. We employ a version of the entropic uncertainty relation for smooth entropies to give a lower bound on the number of secret bits which can be extracted from a finite number of runs of the protocol. This bound is valid under general coherent attacks, and gives rise to keys which are composably secure. For comparison, we also give a lower bound valid under the assumption of collective attacks. For both scenarios, we find positive key rates using experimental parameters reachable today.
AB - We provide a security analysis for continuous variable quantum key distribution protocols based on the transmission of squeezed vacuum states measured via homodyne detection. We employ a version of the entropic uncertainty relation for smooth entropies to give a lower bound on the number of secret bits which can be extracted from a finite number of runs of the protocol. This bound is valid under general coherent attacks, and gives rise to keys which are composably secure. For comparison, we also give a lower bound valid under the assumption of collective attacks. For both scenarios, we find positive key rates using experimental parameters reachable today.
UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-84892380573&origin=inward&txGid=3dc131401f700db789380edd89a8af8e
U2 - 10.1103/PhysRevLett.109.100502
DO - 10.1103/PhysRevLett.109.100502
M3 - Article
VL - 109
SP - 100502
JO - Phys. Rev. Lett.
JF - Phys. Rev. Lett.
ER -