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Quantum optics

Quantum optics

Qubits can swim through seawater

25 Aug 2017 Hamish Johnston
Photograph of a US Navy Virginia-class submarine
Down periscope: could submarines use quantum encryption?
Photon-based qubits and entangled states have been transmitted up to 3 m in sea water by Xian-Min J

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Hamish Johnston is an online editor of Physics World
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