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Long-distance quantum communication with “polarization” maximally entangled states |
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| Authors: | Fang-Yu Hong Shi-Jie Xiong |
| Affiliation: | a Department of Physics, Center for Optoelectronics Materials and Devices, Zhejiang Sci-Tech University, Xiasha College Park, Hangzhou, Zhejiang 310018, China b National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China |
| Abstract: | We propose a scheme for long-distance quantum communication where the elementary entanglement is generated through two-photon interference and quantum swapping is performed through one-photon interference. Local “polarization” maximally entangled states of atomic ensembles are generated by absorbing a single photon from on-demand single-photon sources. This scheme is robust against phase fluctuations in the quantum channels, moreover speeds up long-distance high-fidelity entanglement generation rate. |
| Keywords: | Quantum entanglement Quantum repeater Atomic ensemble |
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