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arXiv · 0806.1606

Non-secret correlations can be used to distribute secrecy

Joonwoo Bae·Toby Cubitt·Antonio Acin
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Abstract

A counter-intuitive result in entanglement theory was shown in [PRL 91 037902 (2003)], namely that entanglement can be distributed by sending a separable state through a quantum channel. In this work, following an analogy between the entanglement and secret key distillation scenarios, we derive its classical analog: secrecy can be distributed by sending non-secret correlations through a private channel. This strengthens the close relation between entanglement and secrecy.

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Joonwoo Bae, Toby Cubitt, Antonio Acin. 2008-06-10. Non-secret correlations can be used to distribute secrecy. https://doi.org/10.1103/physreva.79.032304

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