Quantum mutual information and the one-time pad

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.

11 pages, LaTeX

References in corpus (2)

• Quantum data processing and error correction
• On the quantum, classical and total amount of correlations in a quantum state

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