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Micius Quantum Experiments in Space by Lu, Chao-Yang; Cao, Yuan; Peng, Cheng-Zhi; Pan, Jian-Wei is a scholarly article available to read on EtoBox.

What is Micius Quantum Experiments in Space about?

Quantum theory has been successfully validated in numerous laboratory experiments. But would such a theory, which excellently describes the behavior of microscopic physical systems, and its predicted phenomena such as quantum entanglement, be still applicable on very large length scales? From a practical perspective, how can quantum key distribution -- where the security of establishing secret keys between distant parties is ensured by the laws of quantum mechanics -- be made technologically useful on a global scale? Due to photon loss in optical fibers and terrestrial free space, the achievable distance using direct transmission of single photons has been limited to a few hundred kilometers. A promising route to testing quantum physics over long distances and in the relativistic regimes, and thus realizing flexible global-scale quantum networks is via the use of satellites and space-based technologies, where a significant advantage is that the photon loss and turbulence predominantly occurs in the lower ~ 10 km of the atmosphere, and most of the photons' transmission path in the space is virtually in vacuum with almost zero absorption and decoherence. In this Article, we review th

Author

Lu, Chao-Yang; Cao, Yuan; Peng, Cheng-Zhi; Pan, Jian-Wei

Published

2022

Language

EN