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Phys Rev Lett. 2000 Nov 6;85(19):3987-90.

Creating macroscopic atomic Einstein-Podolsky-Rosen states from Bose-Einstein condensates.

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Optical Sciences Center, The University of Arizona, Tucson, Arizona 85721, USA.


We present a scheme for creating quant entangled atomic states through the coherent spin-exchange collision of a spinor Bose-Einstein condensate. The state generated possesses macroscopic Einstein-Podolsky-Rosen correlation and the fluctuation in one of its quasispin components vanishes. We show that an elongated condensate with large aspect ratio is most suitable for creating such a state.

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