Performance of single-photons communication using the multi-channel frequency coding scheme

Abstract

In this paper, optical communication at the single-photon level is experimentally demonstrated by using a multi-channel frequency coding scheme in which the information is decoded by using the single-photons modulation spectrum. By using the modulation spectrum, the coding scheme could work normally in a channel with high loss and noise. Besides, multiple modulation frequency components could be used in a wide bandwidth regardless of frequency aliasing; therefore, the multi-channel frequency coding scheme makes it possible for high-capacity single-photons communication.