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Scientists exchanged quantum information on daylight in a free-space quantum key distribution

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Scientists have reported a successful free-space quantum key distribution (QKD) in daylight with the self-developed polarization encoding chip for the first time. QKD is one of the most promising secure communication technologies, which encodes information into a single-photon, the smallest measurable unit of light. By using the quantum mechanical properties of the single-photon, quantum cryptography guarantees secure information exchange between the distant parties.

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"Scientists exchanged quantum information on daylight in a free-space quantum key distribution", MachPrinciple, December 11, 2018, https://machprinciple.com/post/Scientists-exchanged-quantum-information-on-daylight-in-a-free-space-quantum-key-distribution

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