使用4x4分束器探测网络提高双场量子密钥分发的密钥吞吐量
Increased Secret Key Throughput in Twin Field Quantum Key Distribution using 4x4 Beam Splitter Detection Network
AI总结：
针对TFQKD相位切片后选择概率受限的问题，提出在Charlie端采用4x4分束器网络与四探测器方案，理论建模和StrawberryFields仿真表明其提升了密钥吞吐量。
摘要：
双场量子密钥分发（TFQKD）因其高于无中继基本极限的更高密钥容量并可扩展可达距离，近来引起了广泛关注。TFQKD中的密钥生成基于对随机相位切片的后选择。本文描述了一种通过在Charlie端、4x4端口分束器网络之后放置四个探测器来提高相位切片选择概率的技术。利用密钥率的理论建模以及使用StrawberryFields进行的仿真，我们观察到与传统TFQKD相比，密钥吞吐量有所增加。
英文摘要：
Twin Field Quantum key Distribution (TFQKD) has attracted recent interest due to the higher secret key capacity better than the fundamental repeaterless limit and extending the achievable distance. The key generation in TFQKD is based on the post selection of randomized phase slices. This paper describes a technique for enhancing the probability of choosing the phase slices by using four detectors at Charlie end placed after a 4x4 port beam-splitter network. Using theoretical modelling of secret keyrate and simulations using StrawberryFields, we observe an increase in secret key throughput when compared to conventional TFQKD.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
