Continuous-variable quantum repeaters based on bosonic error-correction and teleportation: architecture and applications
Continuous-variable quantum repeaters based on bosonic error-correction and teleportation: architecture and applications
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DOI：
10.1088/2058-9565/ac4f6b
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发表时间：
2021-09
影响因子：
6.7
通讯作者：
Bo-Han Wu;Zheshen Zhang;Quntao Zhuang
中科院分区：
文献类型：
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作者：
Bo-Han Wu;Zheshen Zhang;Quntao Zhuang
量子中继器是连接量子计算机和传感器等远距离量子模块的量子网络的重要组成部分。在分布式量子计算和通信的激励下，用于中继离散变量量子信息的量子中继器得到了广泛的研究；虽然连续变量（CV）量子信息支撑着各种量子传感和通信应用，但用于真正CV量子信息的量子中继器架构在很大程度上仍未被探索。本文报道了一种基于Gottesman-Kitaev-Preskill码辅助的CV量子隐形传态的CV量子中继器结构，可以有效地抑制物理噪声。设计的CV量子中继器架构显著提高了纠缠辅助通信、基于量子照明的目标检测和CV量子密钥分发的性能，这是量子通信和传感的三个代表性用例。
Quantum repeater is an essential ingredient for quantum networks that link distant quantum modules such as quantum computers and sensors. Motivated by distributed quantum computing and communication, quantum repeaters that relay discrete-variable quantum information have been extensively studied; while continuous-variable (CV) quantum information underpins a variety of quantum sensing and communication application, a quantum-repeater architecture for genuine CV quantum information remains largely unexplored. This paper reports a CV quantum-repeater architecture based on CV quantum teleportation assisted by the Gottesman–Kitaev–Preskill code to significantly suppress the physical noise. The designed CV quantum-repeater architecture is shown to significantly improve the performance of entanglement-assisted communication, target detection based on quantum illumination and CV quantum key distribution, as three representative use cases for quantum communication and sensing.