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Experimental Point-to-Multipoint Plug-and-Play Measurement-Device-Independent Quantum Key Distribution Network |
| Guang-Zhao Tang**, Shi-Hai Sun**, Chun-Yan Li |
College of Science, National University of Defense Technology, Changsha 410073
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| Cite this article: |
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Guang-Zhao Tang, Shi-Hai Sun, Chun-Yan Li 2019 Chin. Phys. Lett. 36 070301 |
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Abstract Measurement-device-independent quantum key distribution (MDI-QKD) offers a practical way to realize a star-type quantum network. Previous experiments on MDI-QKD networks can only support the point-to-point communication. We experimentally demonstrate a plug-and-play MDI-QKD network which can support the point-to-multipoint communication among three users. Benefiting from the plug-and-play MDI-QKD architecture, the whole network is automatically stabilized in spectrum, polarization, arrival time, and phase reference. The users only need the encoding devices, which means that the hardware requirements are greatly reduced. Our experiment shows that it is feasible to establish a point-to-multipoint MDI-QKD network.
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Received: 21 January 2019
Published: 20 June 2019
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| PACS: |
03.67.Dd
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(Quantum cryptography and communication security)
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03.67.Hk
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(Quantum communication)
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89.70.Cf
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(Entropy and other measures of information)
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| Fund: Supported by the National Natural Science Foundation of China under Grant Nos 11674397 and 61671455. |
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