2019/01/24 by Yonggi Jo, Kwangil Bae, Wonmin Son
Computer Science · Physics and Astronomy · #Bell state #Measurement device #Mechanical and Optical Resonators #Quantum #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum entanglement #Quantum key distribution #Quantum network #Quantum sensor #Quantum state #Quantum teleportation #State (computer science) #quant-ph
paper · pdf · doi:10.1038/s41598-018-36513-x
published as Scientific Reports 9, 687 (2019) · 11 pages, 7 figures
openalex publication_date 2019/01/24 · arxiv created 2019/01/25 · arxiv updated 2019/01/28 · openalex created_date 2019/02/21 · openalex updated_date 2026/08/05
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.