Measurement-device-independent quantum key distribution of multiple degrees of freedom of a single photon

• 作者: Yu-Fei Yan Lan Zhou Wei Zhong Yu-Bo Sheng
• 来源期刊: 物理学前沿
• 年，卷（期）: 2021,（1）
• 所属期刊栏目: Quantum Information;Atomic,Molecular & Optical Physics
• 页码范围: 123-133
• 页数: 11页
• 语种: 英文

摘要

Measurement-device-independent quantum key distribution (MDI-QKD) provides us a powerful approach to resist all attacks at detection side.Besides the unconditional security,people also seek for high key generation rate,but MDI-QKD has relatively low key generation rate.In this paper,we provide an efficient approach to increase the key generation rate of MDI-QKD by adopting multiple degrees of freedom (DOFs) of single photons to generate keys.Compared with other high-dimension MDI-QKD protocols encoding in one DOF,our protocol is more flexible,for our protocol generating keys in independent subsystems and the detection failure or error in a DOF not affecting the information encoding in other DOFs.Based on above features,our MDI-QKD protocol may have potential application in future quantum communication field.