We calculate the magnitude of cross phase modulation(XPM)induced by classical channels,and analyze its impact on quantum secure key rate.The results show that the XPM induced by classical signals is small and its impa...We calculate the magnitude of cross phase modulation(XPM)induced by classical channels,and analyze its impact on quantum secure key rate.The results show that the XPM induced by classical signals is small and its impact on the quantum key distribution can be neglected.展开更多
基金Supported by the National Natural Science Foundation of China under Grant No 10904174the Natural Science Foundation of Hunan Province under Grant No 11JJ2004.
文摘We calculate the magnitude of cross phase modulation(XPM)induced by classical channels,and analyze its impact on quantum secure key rate.The results show that the XPM induced by classical signals is small and its impact on the quantum key distribution can be neglected.