Monogamy of entanglement as a necessary and sufficient condition for safe QKD in any physical theory

Details Monogamy of entanglement as a necessary and sufficient condition for safe QKD in any physical theory Monogamy of entanglement as a necessary and sufficient condition for safe QKD in any physical theory

2007-05-15

arxiv.org/abs/0705.2155v1

Physics

Quantum Physics

3 Pages, RevTex

Scientific paper

We show that the monogamy of entanglement is a sufficient phenomenon in every
physical theory, if the quantum key distribution is to be safe on the grounds
of such theory. To do so we present the QKD protocol that is safe in any
physical theory under the assumption of the monogamous entanglement only. The
necessity of this condition is also discussed.

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