Mismatched-basis statistics enable quantum key distribution with uncharacterized qubit sources
arXiv:1407.1924 · doi:10.1103/PhysRevA.90.052319
Abstract
In the postprocessing of quantum key distribution, the raw key bits from the mismatched-basis measurements, where two parties use different bases, are normally discarded. Here, we propose a postprocessing method that exploits measurement statistics from mismatched-basis cases, and prove that incorporating these statistics enables uncharacterized qubit sources to be used in the measurement-device-independent quantum key distribution protocol and the Bennett-Brassard 1984 protocol, a case which is otherwise impossible.
Part of this article contains a significant improvement over arXiv:1309.3819
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