期刊
RESULTS IN PHYSICS
卷 40, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.rinp.2022.105830
关键词
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资金
- National Natural Science Founda-tion of China [11805050, 12071110]
- Hebei Nat-ural Science Foundation of China [A2022205004, A2020205014]
- Science and Technology Project of Hebei Education Department, China [ZD2020167, ZD2021066]
- Science Foundation of Hebei Normal University, China [L2021B13]
In this paper, two practical linear optical schemes are proposed for the distribution of multipartite entanglement in noisy channels. By using specific encoding methods, perfect W or GHZ states can be achieved among different nodes in a deterministic manner. These results are of great significance for long-distance quantum communication both in theory and experiment.
Entanglement among multiple parties is vital for practical quantum information applications. As two kinds of typical multipartite entangled state, the W and Greenberger-Horne-Zeilinger (GHZ) states have attracted a lot of attention. In this paper, we propose two practical linear optical schemes for multipartite entanglement distribution in noisy channels. Using the time-bin or spatial-mode degree of freedom (DoF) encoding, the influence of the noise will be eliminated and perfect W or GHZ state can be achieved among different nodes in a deterministic way. Moreover, we construct quantum circuits, which can be implemented with current technology. These results contribute to long-distance quantum communication both in theoretical and experimental points of view.
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