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Non-local correlations and key distribution

Wednesday 8th September 2004 - 11:30 to 12:15
INI Seminar Room 2

We present a quantum key distribution scheme that is secure even against eavesdroppers who can break the laws of quantum mechanics, as long as superluminal signalling is impossible. The scheme is based on violation of a Bell inequality, and its security stems from the fact that non-local correlations are monogamous, in analogy with the monogamy of entanglement.

University of Cambridge Research Councils UK
    Clay Mathematics Institute London Mathematical Society NM Rothschild and Sons