Optimal ratio between phase basis and bit basis in QKD
arXiv:0805.3190 · doi:10.1103/PhysRevA.79.020303
Abstract
In the original BB84 protocol, the bit basis and the phase basis are used with equal probability. Lo et al (J. of Cryptology, 18, 133-165 (2005)) proposed to modify the ratio between the two bases by increasing the final key generation rate. However, the optimum ratio has not been derived. In this letter, in order to examine this problem, the ratio between the two bases is optimized for exponential constraints given Eve's information distinguishability and the final error probability.
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Cited by in corpus (5)
- Finite-key analysis for practical implementations of quantum key distribution
- Passive decoy state quantum key distribution with practical light sources
- Narrow basis angle doubles secret key in the BB84 protocol
- Finite-Block-Length Analysis in Classical and Quantum Information Theory
- Optimum ratio between two bases in Bennett-Brassard 1984 protocol with second order analysis