Ground station efficiency for quantum communications

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We investigated the possibility of practical implementation of a quantum communication link for encryption key distribution between a Micius satellite and a mobile ground optical station. Thanks to theoretical estimation numerical values of the main parameters of such a communication link are obtained: total loss, key generation rate and secret key length, as well as quantum bit error rate.

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作者简介

K. Barbyshev

QSpace Technologies LLC; Moscow Power Engineering Institute

编辑信件的主要联系方式.
Email: k.barbyshev@goqrate.com
俄罗斯联邦, Moscow; Moscow

A. Duplinsky

QSpace Technologies LLC; HSE University

Email: k.barbyshev@goqrate.com
俄罗斯联邦, Moscow; Moscow

A. Khmelev

QSpace Technologies LLC

Email: k.barbyshev@goqrate.com
俄罗斯联邦, Moscow

V. Kurochkin

QSpace Technologies LLC; MISIS National University of Science and Technology

Email: k.barbyshev@goqrate.com
俄罗斯联邦, Moscow; Moscow

参考

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2. Fig. 1. Satellite elevation angle (1, solid curve) and distance to the satellite (2, dashed curve)

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3. Fig. 2. Total link losses in case of excellent weather conditions (1, solid curve), good (2, dashed curve), average (3, dashed curve), bad (4, dotted curve)

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4. Fig. 3. Sifted key generation rate (a) and quantum bit error rate (b) in the case of excellent weather conditions (1, solid curve), good (2, dashed curve), average (3, dashed curve), poor (4, dotted curve)

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5. Fig. 4. Ground-based optical station [11]: optical scheme (a) and external view (b)

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