Polarization recovery and auto-compensation in quantum key distribution network

Lijun Ma; Hai Xu; Xiao Tang

doi:10.1117/12.679575

30 August 2006 Polarization recovery and auto-compensation in quantum key distribution network

Lijun Ma, Hai Xu, Xiao Tang

Proceedings Volume 6305, Quantum Communications and Quantum Imaging IV; 630513 (2006) https://doi.org/10.1117/12.679575
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

Abstract

A Quantum Key Distribution (QKD) network can allow multi-user communication via secure key. Moreover, by actively switching communication nodes, one can achieve high key transmission rate for the selected nodes. However, the polarization properties of different fiber path are different and these properties also randomly drift over time. Therefore, polarization recovery after the switching and auto-compensation during key transmission are critical for the QKD network. In this work, we use programmable polarization controllers to implement polarization recovery and auto-compensation in the QKD network. We will also discuss its time limitation and future improvement.

Citation Download Citation

Lijun Ma, Hai Xu, and Xiao Tang "Polarization recovery and auto-compensation in quantum key distribution network", Proc. SPIE 6305, Quantum Communications and Quantum Imaging IV, 630513 (30 August 2006); https://doi.org/10.1117/12.679575

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