Improved composable key rates for CV-QKD
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arXiv
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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866908676775739392 |
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| author | Pirandola, Stefano Papanastasiou, Panagiotis |
| author_facet | Pirandola, Stefano Papanastasiou, Panagiotis |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2301_10270 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Improved composable key rates for CV-QKD Pirandola, Stefano Papanastasiou, Panagiotis Quantum Physics Applied Physics Computational Physics 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. |
| title | Improved composable key rates for CV-QKD |
| topic | Quantum Physics Applied Physics Computational Physics |
| url | https://arxiv.org/abs/2301.10270 |