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Title

Einstein-Podolsky-Rosen entanglement and steering in two-well Bose-Einstein-condensate ground states

Author(s)

He, Q. Y.;  Drummond, P. D.;  Olsen, M. K.;  Reid, M. D.

Abstract

We consider how to generate and detect Einstein-Podolsky-Rosen (EPR) entanglement and the steering paradox between groups of atoms in two separated potential wells in a Bose-Einstein condensate. We present experimental criteria for this form of entanglement and propose experimental strategies for detecting entanglement using two- or four-mode ground states. These approaches use spatial and/or internal modes. We also present higher-order criteria that act as signatures to detect the multiparticle entanglement present in this system. We point out the difference between spatial entanglement using separated detectors and other types of entanglement that do not require spatial separation. The four-mode approach with two spatial and two internal modes results in an entanglement signature with spatially separated detectors, conceptually similar to the original EPR paradox.

Publication type

Journal article

Research centre

Swinburne University of Technology. Faculty of Engineering and Industrial Sciences. Centre for Atom Optics and Ultrafast Spectroscopy

Source

Physical Review A: Atomic, Molecular, and Optical Physics, Vol. 86, no. 2 (Aug 2012), article no. 023626

Publication year

2012

FOR Code(s)

01 Mathematical Sciences;  02 Physical Sciences;  03 Chemical Sciences

Keyword(s)

Bose-Einstein condensates;  Einstein-Podolsky-Rosen entanglement;  EPR;  Steering paradox

Publisher

American Physical Society

ISSN

1050-2947

Publisher URL

http://dx.doi.org/10.1103/PhysRevA.86.023626

Copyright

Copyright © 2012 American Physical Society. The published version is reproduced in accordance with the copyright policy of the publisher.

Additional information

Supported by the Australian Research Council.

Full text

Peer reviewed