Deep-Space Optical Communication Receiver Based on Single Photon Coherent Beam Combination

• URL: http://arxiv.org/abs/2512.05897v1
• Date: Fri, 05 Dec 2025 17:20:13 GMT
• Title: Deep-Space Optical Communication Receiver Based on Single Photon Coherent Beam Combination
• Authors: Antoni Mikos-Nuszkiewicz, Karol Łukanowski, Konrad Banaszek, Marcin Jarzyna,
• Abstract summary: We introduce an alternative receiver architecture for deep-space optical communication, in which a single large aperture is replaced by an array of smaller ones with outputs combined coherently.<n>We show that it allows to increase the signal to noise ratio, thus potentially attaining higher information transmission rates in the regime of large noise.<n>Under nighttime conditions the achieved performance is comparable to that offered by a single large aperture, whereas in daytime conditions the single photon coherent beam combination architecture provides an advantage in the information transmission rate.
• Score: 0.5599792629509227
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: We introduce an alternative receiver architecture for deep-space optical communication, in which a single large aperture is replaced by an array of smaller ones with outputs combined coherently, employing phase stabilization based on photon counting events. We show that it allows to increase the signal to noise ratio, thus potentially attaining higher information transmission rates in the regime of large noise, typical for daytime communication. We analyze its practical performance by simulating pulse position modulation-based communication from the recently launched Psyche mission. Under nighttime conditions the achieved performance is comparable to that offered by a single large aperture, whereas in daytime conditions the single photon coherent beam combination architecture provides an advantage in the information transmission rate.

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