Improved composable key rates for CV-QKD

Stefano Pirandola; Panagiotis Papanastasiou

doi:10.1103/PhysRevResearch.6.023321

Improved composable key rates for CV-QKD

Stefano Pirandola, Panagiotis Papanastasiou

Computer Science

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Article number	023321
Number of pages	13
Journal	Physical Review Research
Volume	6
DOIs	https://doi.org/10.1103/PhysRevResearch.6.023321
Publication status	Published - 24 Jun 2024

Bibliographical note

Results largely extended. Improves theory from arXiv:2203.00706, arXiv:2010.04168, and arXiv:1912.11418

Keywords

quant-ph
physics.app-ph
physics.comp-ph

Access to Document

10.1103/PhysRevResearch.6.023321Licence: CC BY

Improved composable key rates for CV-QKDFinal published version, 463 KBLicence: CC BY

Cite this

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