Quantum communication: Quantum secret kept for a day

Quantum communication: Quantum secret kept for a day

Nature 538, 7624 (2016). doi:10.1038/538142c

A bit of information can be kept secure for 24 hours before being revealed — more than 5 million times longer than the previous record.Quantum cryptography guards against eavesdroppers, but in secure voting and sealed-bid auctions, a message must remain unread and protected for

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