Phase transitions, entanglement and quantum noise interferometry in cold atoms

Details Phase transitions, entanglement and quantum noise interferometry in cold atoms Phase transitions, entanglement and quantum noise interferometry in cold atoms

2008-03-05

arxiv.org/abs/0803.0760v1

Physics

Quantum Physics

4 pages 4 figures

Scientific paper

We show that entanglement monotones can characterize the pronounced enhancement of entanglement at a quantum phase transition if they are sensitive to long-range high order correlations. These monotones are found to develop a sharp peak at the critical point and to exhibit universal scaling. We demonstrate that similar features are shared by noise correlations and verify that these experimentally accessible quantities indeed encode entanglement information and probe separability.

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