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Environment-Induced Sudden Death of Entanglement

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Science  27 Apr 2007:
Vol. 316, Issue 5824, pp. 579-582
DOI: 10.1126/science.1139892

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Abstract

We demonstrate the difference between local, single-particle dynamics and global dynamics of entangled quantum systems coupled to independent environments. Using an all-optical experimental setup, we showed that, even when the environment-induced decay of each system is asymptotic, quantum entanglement may suddenly disappear. This “sudden death” constitutes yet another distinct and counterintuitive trait of entanglement.

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