Title

Quantum mutual information and the one-time pad

Document Type

Article

Publication Date

October 2006

Abstract

Alice and Bob share a correlated composite quantum system AB. If AB is used as the key for a one-time pad cryptographic system, we show that the maximum amount of information that Alice can send securely to Bob is the quantum mutual information of AB.

Journal

Physical Review A

Volume

74

Issue

4

First Page

42305

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