The non-local content of quantum operations

Abstract

We show that quantum operations on multi-particle systems have a non-local content; this mirrors the non-local content of quantum states. We introduce a general framework for discussing the non-local content of quantum operations, and give a number of examples. Quantitative relations between quantum actions and the entanglement and classical communication resources needed to implement these actions are also described. We also show how entanglement can catalyse classical communication from a quantum action.

7 pages

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• Exact and Asymptotic Measures of Multipartite Pure State Entanglement
• Entanglement-assisted local manipulation of pure quantum states
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