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设计了适用于远距离量子通信实验的高维纠缠源.利用连续激光器抽运产生了极化-时间两体四维纠缠光子对,在抽运功率20mW下测到每秒700对符合,保真度为89%±3%.相比已有的高维纠缠源,在本文中发展的源具有传输便利、相位稳定性好等优点,适用于未来远距离高维量子通信实验和量子力学基本问题实验检验,如远距离高维量子密码实验、两粒子Greenberger-Horne-Zeilinger定理检验、两粒子量子赝“心灵感应”(quantum pseudo telepathy)实验演示等.
A high-dimensional entangled source suitable for long-distance quantum communication experiments was designed. Polarization-time bipartite four-dimensional entangled photon pairs were generated by continuous laser pumping, and 700 pairs of fits per second at a pumping power of 20mW were obtained. Is 89% ± 3% .Compared with the existing high-dimensional entangled sources, the source developed in this paper has the advantages of convenient transmission and good phase stability, and is suitable for the experiment of the long-range high-dimensional quantum communication and the basic problems of quantum mechanics Tests, such as long-range high-dimensional quantum cryptography experiments, Greenberger-Horne-Zeilinger theorem tests of two-particle, two-particle quantum pseudosensors, quantum pseudo telepathy experimental demonstrations, and the like.