量子密钥分发中基于单光子的时钟分析和恢复

IF 4.2 Q2 QUANTUM SCIENCE & TECHNOLOGY AVS quantum science Pub Date : 2023-11-23 DOI:10.1116/5.0167549
M. Zahidy, D. Ribezzo, R. Muller, J. Riebesehl, A. Zavatta, M. Galili, L. Oxenløwe, Davide Bacco
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引用次数: 0

摘要

量子密钥分发是最早进入市场的量子技术之一。当前的量子通信系统通常利用服务通道来同步发送器(Alice)和接收器(Bob)。然而,无论是在光纤链路还是自由空间链路中,移除服务信道并利用时钟恢复方法的可能性对未来的实施都很有吸引力。在本文中,我们研究了在量子通信场景中恢复时钟的标准,并通过实验证明了在分时量子密钥分发协议中使用基于量子的时钟恢复系统的可能性。就量子比特错误率和秘钥率而言,时钟恢复技术的性能等同于使用服务信道进行时钟共享。
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Single-photon-based clock analysis and recovery in quantum key distribution
Quantum key distribution is one of the first quantum technologies ready for the market. Current quantum telecommunication systems usually utilize a service channel for synchronizing the transmitter (Alice) and the receiver (Bob). However, the possibility of removing this service channel and exploiting a clock recovery method are intriguing for future implementation, both in fiber and free-space links. In this paper, we investigate criteria to recover the clock in a quantum communication scenario and experimentally demonstrated the possibility of using a quantum-based clock recovery system in a time-bin quantum key distribution protocol. The performance of the clock recovery technique, in terms of quantum bit error rate and secret key rate, is equivalent to using the service channel for clock sharing.
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CiteScore
9.90
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