Nonclassicality without entanglement enables bit commitment

Details Nonclassicality without entanglement enables bit commitment Nonclassicality without entanglement enables bit commitment

2008-03-08

arxiv.org/abs/0803.1264v1

Proceedings of IEEE Information Theory Workshop, 2008, pp. 386-390

Physics

Quantum Physics

Scientific paper

10.1109/ITW.2008.4578692

We investigate the existence of secure bit commitment protocols in the convex framework for probabilistic theories. The framework makes only minimal assumptions, and can be used to formalize quantum theory, classical probability theory, and a host of other possibilities. We prove that in all such theories that are locally non-classical but do not have entanglement, there exists a bit commitment protocol that is exponentially secure in the number of systems used.

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