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Trapped Ion Quantum Computing

Continuous Variable Quantum Key Distribution: Finite-Key Analysis of Composable Security against Coherent Attacks

arXiv
Authors: Fabian Furrer, Torsten Franz, Mario Berta, Anthony Leverrier, Volkher B. Scholz, Marco Tomamichel, Reinhard F. Werner

Year

2011

Paper ID

29293

Status

Preprint

Abstract Read

~2 min

Abstract Words

105

Citations

N/A

Abstract

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.

Why This Paper Matters

  • This paper contributes to the Trapped-Ion Quantum Computing research area in the Quantum Articles archive.
  • It adds a 2011 reference point for readers tracking recent quantum research.
  • We provide a security analysis for continuous variable quantum key distribution protocols based on the transmission of squeezed vacuum states measured via homodyne detection.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1112.2179 [2] arXiv https://arxiv.org/abs/1112.2179 [3] Publisher https://arxiv.org/abs/1112.2179

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