摘要
本文提出了一种对每一个单光子信号进行相位和偏振两种编码调制的联合调制量子密钥分配(QKD)系统.结合复合QKD系统的双速协议,本文给出了在理想情形下可以通过一个信号光子生成两比特密钥的QKD协议,明显提高了QKD协议的内禀光子利用率.在稳定性方面,本文发展了联合调制的Michelson型QKD系统,从而在原理上解决了联合调制QKD系统的稳定性问题.
We suggest a combined modulation quantum key distribution (QKD) system which encodes each single-photon signal with both phase modulation and polarization modulation. With the aid of dual-velocity protocol of hybrid QKD system, we construct a scheme to realize this combined modulation QKD which generates two-bit key with one signal for increasing the efficiency of QKD. We also develop a combined modulation Michelson QKD system, then solve the stability problem of the combined modulation QKD system in principle.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2013年第13期67-73,共7页
Acta Physica Sinica
基金
国家自然科学基金(批准号:61173157)
广东省自然科学基金重点项目(批准号:10251063101000001)资助的课题~~