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Practical Real-Time Phase Drift Compensation Scheme for Quantum Communication Systems
Xiaotian Song1, Chunsheng Zhang1, Dong Pan1
1Beijing Academy of Quantum Information Sciences, Beijing 100193, China.
Abstract:
Quantum communication systems are susceptible to various perturbations and drifts arising from the operational environment, with phase drift being a crucial challenge. In this paper, we propose an efficient real-time phase drift compensation scheme in which only existing data from the quantum communication process is used to establish a stable closed-loop control subsystem for phase tracking. This scheme ensures the continuous operation of transmission by tracking and compensating for phase drift in the phase-encoding quantum communication system. The experimental results demonstrate the effectiveness and feasibility of the proposed scheme with an average quantum bit error rate of 1.60% and a standard deviation of 0.0583% for 16 h of continuous operation.
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