QKD Based on Time-Entangled Photons and Its Key-Rate Promise
QKD Based on Time-Entangled Photons and Its Key-Rate Promise
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DOI：
10.1109/mbits.2023.3262237
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发表时间：
2022-12
期刊：
影响因子：
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通讯作者：
L. Dolecek;E. Soljanin
中科院分区：
文献类型：
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作者：
L. Dolecek;E. Soljanin
对于安全的实用系统，量子密钥分布（QKD）必须在长距离内提供很高的密钥速率。与其他QKD实施相比，基于时间范围的QKD有望增加秘密密钥和分配距离。本文介绍了QKD协议中的主要步骤，重点是基于高维时型纠缠光子的新生QKD技术。我们从信息和编码理论的角度概述了最新的。特别是，我们讨论了由于单光子检测器缺陷而导致的关键率损失。我们希望本文提出和讨论的开放问题能够激发信息和编码理论家为刚起步的量子应用做出贡献并影响未来的量子通信系统。
For secure practical systems, quantum key distribution (QKD) must provide high key rates over long distances. Time-entanglement-based QKD promises to increase the secret key rate and distribution distances compared to other QKD implementations. This article describes the major steps in QKD protocols, focusing on the nascent QKD technology based on high-dimensional time-bin entangled photons. We overview the state-of-the-art from the information and coding theory perspective. In particular, we discuss the key rate loss due to single-photon detector imperfections. We hope the open questions posed and discussed in this article will inspire information and coding theorists to contribute to and impact fledgling quantum applications and influence future quantum communication systems.