Quantum correlations as precursors of entanglement

Details Quantum correlations as precursors of entanglement Quantum correlations as precursors of entanglement

2010-08-23

arxiv.org/abs/1008.3866v1

Physics

Quantum Physics

11 pages, 6 figures, accepted in Physical Review A

Scientific paper

We show that for two initially excited qubits, interacting via dipole forces and with a common reservoir, entanglement is preceded by the emergence of quantum and classical correlations. After a time lag, entanglement finally starts building up, giving rise to a peculiar entangled state, with very small classical correlations. Different measures of quantum correlations are discussed, and their dynamics are compared and shown to lead to coincident values of these quantifiers for several ranges of time.

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