Mismatched-basis statistics enable quantum key distribution with uncharacterized qubit sources
Mismatched-basis statistics enable quantum key distribution with uncharacterized qubit sources
复制标题
不匹配基础统计数据支持使用未表征的量子位源进行量子密钥分发
DOI:
10.1103/physreva.90.052319
复制
发表时间:
2014-07
影响因子:
2.9
通讯作者:
Zhen-Qiang Yin, Chi-Hang Fred Fung, Xiongfeng Ma,
中科院分区:
文献类型:
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作者:
Zhen-Qiang Yin, Chi-Hang Fred Fung, Xiongfeng Ma,
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.