Photon-Inter-Correlation Optical Communication

• URL: http://arxiv.org/abs/2104.08913v1
• Date: Sun, 18 Apr 2021 17:00:03 GMT
• Title: Photon-Inter-Correlation Optical Communication
• Authors: Zeng-Quan Yan, Cheng-Qiu Hu, Zhan-Ming Li, Zhong-Yuan Li, Hang Zheng, Xian-Min Jin
• Abstract summary: Communication using photons as carriers has a high channel capacity, but the optical diffraction limit in deep space leads to huge geometric loss. Here, we propose and experimentally demonstrate a photon-inter-correlation optical communication (PICOC) against an ultra-high channel loss. We successfully build high-fidelity communication channel with a loss up to 160dB by separating a single-photon signal embedded in a noise ten times higher.
• Score: 1.3701366534590498
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The development of modern technology extends human presence beyond cislunar space and onto other planets, which presents an urgent need for high-capacity, long-distance and interplanetary communication. Communication using photons as carriers has a high channel capacity, but the optical diffraction limit in deep space leads to inevitable huge geometric loss, setting an insurmountable transmission distance for existing optical communication technologies. Here, we propose and experimentally demonstrate a photon-inter-correlation optical communication (PICOC) against an ultra-high channel loss. We treat light as a stream of photons, and retrieve the additional information of internal correlation and photon statistics globally from extremely weak pulse sequences. We successfully manage to build high-fidelity communication channel with a loss up to 160dB by separating a single-photon signal embedded in a noise ten times higher. With only commercially available telescopes, PICOC allows establishment of communication links from Mars to Earth communication using a milliwatt laser, and from the edge of the solar system to Earth using a few watts laser.

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