The Rochester Conferences on Coherence and Quantum Optics and the Quantum Information and Measurement meeting

Entanglement and decoherence: global versus local dynamics

Marcelo Pereira de Almeida, Fernando de Melo, Malena O. Hor-Meyll, Alejo Salles, Stephen Patrick Walborn, P. H. Souto Ribeiro, L. Davidovich

Published Jan 1, 2007• 0 citations

Publisher

Abstract

We demonstrate, using an all-optical setup based on twin-photons, the difference between local and global dynamics of entangled quantum systems coupled to independent environments. A single experimental realization encompasses several kinds of individual qubit dynamics, including exponential decay and oscillatory exchanges between each qubit and its environment. We verify that entanglement may disappear at a finite time, even when the individual properties of each qubit decay exponentially.

DOI: 10.1364/cqo.2007.ctue1

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