Elements of satellite quantum network

V. L. Kurochkin; A. V. Khmelev; V. F. Mayboroda; R. M. Bakhshaliev; A. V. Duplinsky; Y. V. Kurochkin

doi:10.1117/12.2624443

30 January 2022 Elements of satellite quantum network

V. L. Kurochkin, A. V. Khmelev, V. F. Mayboroda, R. M. Bakhshaliev, A. V. Duplinsky, Y. V. Kurochkin

Proceedings Volume 12157, International Conference on Micro- and Nano-Electronics 2021; 121571T (2022) https://doi.org/10.1117/12.2624443
Event: International Conference on Micro- and Nano-Electronics 2021, 2021, Zvenigorod, Russian Federation

Abstract

Long-distance quantum key distribution (QKD) is a critical component of a quantum network. When network users are within a city, they often use existing telecommunication fiber-optic networks. This method is problematic for QKD on a large scale between cities and countries. Direct connecting of distant consumers with quantum single-photon lines is not possible, because optical fiber involves attenuation. This problem is addressed by constructing a large number of trusted intermediate nodes, but there are concerns with the reliability of each node. To increase the quantum network's dependability, a method of building a satellite quantum network is actively developing. The only one trusted satellite node is required for satellite QKD between any two points on the Earth's surface. Furthermore, a satellite quantum link can also be utilized to add another communication channel in the existing fiber-optic networks that are thousands of kilometers apart. We describe the creation of ground infrastructure elements for receiving single photons in various polarization quantum states from satellites. Ground-based receiving nodes are based on two telescopes with an aperture of 1.2 m and 0.6 m located in remote cities.

Citation Download Citation

V. L. Kurochkin, A. V. Khmelev, V. F. Mayboroda, R. M. Bakhshaliev, A. V. Duplinsky, and Y. V. Kurochkin "Elements of satellite quantum network", Proc. SPIE 12157, International Conference on Micro- and Nano-Electronics 2021, 121571T (30 January 2022); https://doi.org/10.1117/12.2624443

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