In:
Quantum, Verein zur Forderung des Open Access Publizierens in den Quantenwissenschaften, Vol. 7 ( 2023-08-29), p. 1095-
Abstract:
Recent studies showed the finite-size security of binary-modulation CV-QKD protocols against general attacks. However, they gave poor key-rate scaling against transmission distance. Here, we extend the security proof based on complementarity, which is used in the discrete-variable QKD, to the previously developed binary-modulation CV-QKD protocols with the reverse reconciliation under the finite-size regime and obtain large improvements in the key rates. Notably, the key rate in the asymptotic limit scales linearly against the attenuation rate, which is known to be optimal scaling but is not achieved in previous finite-size analyses. This refined security approach may offer full-fledged security proofs for other discrete-modulation CV-QKD protocols.
Type of Medium:
Online Resource
ISSN:
2521-327X
DOI:
10.22331/q-2023-08-29-1095
Language:
English
Publisher:
Verein zur Forderung des Open Access Publizierens in den Quantenwissenschaften
Publication Date:
2023
detail.hit.zdb_id:
2931392-2
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