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arXiv · 2011.11319

Fully connected entanglement-based quantum communication network without trusted node

Xu Liu·Rong Xue·Heqing Wang·Hao Li·Xue Feng·Fang Liu·Kaiyu Cui·Zhen Wang·Lixing You·Yidong Huang·Wei Zhang
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Abstract

Quantum communication is developed owing to the theoretically proven security of quantum mechanics, which may become the main technique in future information security. However, most studies and implementations are limited to two or several parties. Herein, we propose a fully connected quantum communication network without a trusted node for a large number of users. Using flexible wavelength demultiplex/multiplex and space multiplex technologies, 40 users are fully connected simultaneously without a trusted node by a broadband energy-time entangled photon pair source. This network architecture may be widely deployed in real scenarios such as companies, schools, and communities owing to its simplicity, scalability, and high efficiency.

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Xu Liu, Rong Xue, Heqing Wang, Hao Li, Xue Feng, Fang Liu, Kaiyu Cui, Zhen Wang, Lixing You, Yidong Huang, Wei Zhang. 2020-11-23. Fully connected entanglement-based quantum communication network without trusted node. https://arxiv.org/abs/2011.11319

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