Continuous Variable Quantum Key Distribution
Scholz, Volkher B.
- Working Paper
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 Show more
Organisational unit03879 - Christandl, Matthias (SNF-Professur)
03781 - Renner, Renato
NotesSubmitted 9 December 2011.
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