Jo Yonggi, Bae Kwangil, Son Wonmin
Department of Physics, Sogang University, 35, Baekbeom-ro, Mapo-gu, Seoul, 04107, Republic of Korea.
Research Institute for Basic Science, Sogang University, 35, Baekbeom-ro, Mapo-gu, Seoul, 04107, Republic of Korea.
Sci Rep. 2019 Jan 24;9(1):687. doi: 10.1038/s41598-018-36513-x.
We propose an enhanced discrimination measurement for tripartite 3-dimensional entangled states in order to improve the discernible number of orthogonal entangled states. The scheme suggests 3-dimensional Bell state measurement by exploiting composite two 3-dimensional state measurement setups. The setup relies on state-of-the-art techniques, a multi-port interferometer and nondestructive photon number measurements that are used for the post-selection of suitable ensembles. With this scheme, the sifted signal rate of measurement-device-independent quantum key distribution using 3-dimensional quantum states is improved by up to a factor of three compared with that of the best existing setup.
我们提出了一种针对三方三维纠缠态的增强型判别测量方法，以提高可分辨的正交纠缠态数量。该方案建议通过利用两个复合的三维态测量装置来进行三维贝尔态测量。该装置依赖于先进技术、多端口干涉仪和用于对合适系综进行后选择的无损光子数测量。通过该方案，与现有最佳装置相比，使用三维量子态的测量设备无关量子密钥分发的筛选信号速率提高了高达三倍。
