Experimental Observation of Environment-induced Sudden Death of Entanglement

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 show that, while the environment-induced decay of each system is asymptotic, quantum entanglement may suddenly disappear. This "sudden death" constitutes yet another distinct and counter-intuitive trait of entanglement.

arXiv comment4 pages, 4 figures

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• Quantum Control in Open and Periodically Driven Systems
• Vacuum as a less hostile environment to entanglement
• Measuring entanglement of photons produced by a pulsed source
• Decoherence dynamics of open qubit systems