US Patent 12088707 Continuous-variable quantum key distribution (CV-QKD) method and system

A continuous-variable quantum key distribution (CV-QKD) method and system is provided. The CV-QKD method includes: step 1: transmitting a quantum signal and a local oscillation signal synchronously based on time and polarization multiplexing, and performing detection to obtain detection data; and step 2: compensating for the detection data based on a phase compensation algorithm and public data. In this way, a phase can be compensated accurately in channel fading, so as to improve performance of the CV-QKD system.