NTT and University of Tokyo Cite Progress in Quantum Cryptography

Nippon Telegraph and Telephone(NTT) and The University of Tokyo reported progress in developing a quantum cryptography scheme that can assure security without monitoring the error rate of photon transmission.

In an article in the UK science journal “Nature Photonics”, the researchers describe a quantum key distribution (QKD) experiment based on a novel QKD scheme called the round-robin differential phase shift (RRDPS) protocol.

NTT said the experiment is the first demonstration of QKD based on “wave function collapse”, which is distinguished from previous QKD schemes whose security is based on Heisenberg’s uncertainty principle. A major finding is that QKD that does not require error rate monitoring between the sender and receiver.  This could lead to simple and efficient quantum cryptographic systems.

http://www.ntt.co.jp/news2015/1509e/150914a.html

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