{'fraction_non_alphanumeric': 0.025373134328358207, 'fraction_numerical': 0.0, 'mean_word_length': 5.578431372549019, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Performance of single-photons communication using the multi-channel frequency coding scheme.

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.