Improved composable key rates for CV-QKD

• URL: http://arxiv.org/abs/2301.10270v3
• Date: Tue, 7 May 2024 08:48:48 GMT
• Title: Improved composable key rates for CV-QKD
• Authors: Stefano Pirandola, Panagiotis Papanastasiou,
• Abstract summary: In this paper, we refine and advance the previous theory in this area. We provide a more rigorous formulation for the composable key rate of a generic CV-QKD protocol.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Modern security proofs of quantum key distribution (QKD) must take finite-size effects and composable aspects into consideration. This is also the case for continuous-variable (CV) protocols which are based on the transmission and detection of bosonic coherent states. In this paper, we refine and advance the previous theory in this area providing a more rigorous formulation for the composable key rate of a generic CV-QKD protocol. Thanks to these theoretical refinements, our general formulas allow us to prove more optimistic key rates with respect to previous literature.

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