Violation of local uncertainty relations as a signature of entanglement

Abstract

Entangled states represent correlations between two separate systems that are too precise to be represented by products of local quantum states. We show that this limit of precision for the local quantum states of a pair of N-level systems can be defined by an appropriate class of uncertainty relations. The violation of such local uncertainty relations may be used as an experimental test of entanglement generation.

7 pages RevTex, organized into sections and discussion added, to be published in PRA

References in corpus (2)

• Bound entangled states violate a non-symmetric local uncertainty relation
• Uncertainty characteristics of generalized quantum measurements

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