Details
| Original language | English |
|---|---|
| Pages (from-to) | 053049 |
| Number of pages | 1 |
| Journal | New J. Phys. |
| Volume | 15 |
| Publication status | Published - 2013 |
Abstract
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In: New J. Phys., Vol. 15, 2013, p. 053049.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Gaussian Entanglement for Quantum Key Distribution from a Single-Mode Squeezing Source
AU - Eberle, Tobias
AU - Händchen, Vitus
AU - Duhme, Jörg
AU - Franz, Torsten
AU - Werner, Reinhard F.
AU - Schnabel, Roman
PY - 2013
Y1 - 2013
N2 - We report the suitability of an Einstein–Podolsky–Rosen entanglement source for Gaussian continuous-variable quantum key distribution at 1550 nm. Our source is based on a single continuous-wave squeezed vacuum mode combined with a vacuum mode at a balanced beam splitter. Extending a recent security proof, we characterize the source by quantifying the extractable length of a composable secure key from a finite number of samples under the assumption of collective attacks. We show that distances in the order of 10 km are achievable with this source for a reasonable sample size despite the fact that the entanglement was generated including a vacuum mode. Our security analysis applies to all states having an asymmetry in the field quadrature variances, including those generated by superposition of two squeezed modes with different squeezing strengths.
AB - We report the suitability of an Einstein–Podolsky–Rosen entanglement source for Gaussian continuous-variable quantum key distribution at 1550 nm. Our source is based on a single continuous-wave squeezed vacuum mode combined with a vacuum mode at a balanced beam splitter. Extending a recent security proof, we characterize the source by quantifying the extractable length of a composable secure key from a finite number of samples under the assumption of collective attacks. We show that distances in the order of 10 km are achievable with this source for a reasonable sample size despite the fact that the entanglement was generated including a vacuum mode. Our security analysis applies to all states having an asymmetry in the field quadrature variances, including those generated by superposition of two squeezed modes with different squeezing strengths.
U2 - 10.1088/1367-2630/15/5/053049
DO - 10.1088/1367-2630/15/5/053049
M3 - Article
VL - 15
SP - 053049
JO - New J. Phys.
JF - New J. Phys.
SN - 1367-2630
ER -