Abstract
Entanglement is a fundamental concept in quantum mechanics. In this review, we study
various aspects of coherence and entanglement, illustrated by several examples. We
relate the concepts of loss of coherence and disentanglement, via a model of two
two-level atoms in different types of reservoir, including cases of both independent
and common baths. Finally, we relate decoherence and disentanglement, by focusing on
the sudden death of the entanglement and the dependence of the death time with the
distance of our initial condition from the decoherence-free subspace. In particular,
we study the sudden death of the entanglement in a two-atom system with a common
reservoir.
© 2010 Optical Society of America
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