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Phys Rev Lett. 2011 Mar 25;106(12):120404. Epub 2011 Mar 23.

Einstein-Podolsky-Rosen correlations of ultracold atomic gases.

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Weizmann Institute of Science, Rehovot, Israel.


We demonstrate that collective continuous variables of two species of trapped ultracold bosonic gases can be Einstein-Podolsky-Rosen-correlated (entangled) via inherent interactions between the species. We propose two different schemes for creating these correlations--a dynamical scheme and a static scheme analogous to two-mode squeezing in quantum optics. We quantify the correlations by using known measures of entanglement and study the effect of finite temperature on these quantum correlations.

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