Sending-or-not-sending twin-field quantum key distribution with redundant space

We propose to adopt redundant space such as polarization mode in the sending-or-not-sending twin-field quantum key distribution (TF-QKD) in the Fock space. With the help of redundant space such as photon polarization, we can postselect events according to the outcome of the observation to the additi...

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Bibliographic Details
Main Authors: Hai Xu, Xiao-Long Hu, Cong Jiang, Zong-Wen Yu, Xiang-Bin Wang
Format: Article
Language:English
Published: American Physical Society 2023-04-01
Series:Physical Review Research
Online Access:http://doi.org/10.1103/PhysRevResearch.5.023069