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Proceedings Paper

Acquisition and tracking system for 100km quantum entanglement distribution experiment
Author(s): Bo Qi; Hongbin Chen; Ge Ren; Yongmei Huang; Juan Yin; Jigang Ren
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Paper Abstract

Quantum entanglement is the main resource to endow the field of quantum information processing with powers that exceed those of classical communication and computation. Due to low absorption and negligible nonbirefringent character in atmosphere, optical free space therefore serves as the most promising channel for large-scale quantum communication by use of satellites and ground stations. The acquisition, tracking and pointing (ATP) system is one of the most important parts of quantum experiment system, and it controls a transmitting and receiving laser beam within a few micro radians jitter because of using an extremely narrow beam divergence of several micro radians. This paper introduces the cascade ATP systems for 100km quantum entanglement distribution experiment among Charlie, Bob and Alice station. The specification and optical diagram of each ATP system are presented. The ATP system of Alice station is described in detail,it has coarse, fine and ultra-fine loop. In the 100km quantum entanglement distribution experiment, a tracking error of 4μrad is achieved for 70Hz bandwidth. The ATP strategy in this experiment can be used in the prospective satellite-to-ground quantum distribution.

Paper Details

Date Published: 21 August 2013
PDF: 10 pages
Proc. SPIE 8906, International Symposium on Photoelectronic Detection and Imaging 2013: Laser Communication Technologies and Systems, 890622 (21 August 2013); doi: 10.1117/12.2034706
Show Author Affiliations
Bo Qi, Institute of Optics and Electronics (China)
Univ. of Chinese Academy of Sciences (China)
Hongbin Chen, Institute of Optics and Electronics (China)
Ge Ren, Institute of Optics and Electronics (China)
Yongmei Huang, Institute of Optics and Electronics (China)
Juan Yin, Univ. of Science and Technology of China (China)
Jigang Ren, Univ. of Science and Technology of China (China)


Published in SPIE Proceedings Vol. 8906:
International Symposium on Photoelectronic Detection and Imaging 2013: Laser Communication Technologies and Systems
Keith E. Wilson; Jing Ma; Liren Liu; Huilin Jiang; Xizheng Ke, Editor(s)

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