Bragg spectroscopic interferometer and quantum measurement-induced correlations in atomic Bose-Einstein condensates
Bragg spectroscopic interferometer and quantum measurement-induced correlations in atomic Bose-Einstein condensates
We theoretically analyze the Bragg spectroscopic interferometer of two spatially separated atomic Bose-Einstein condensates that was experimentally realized by Saba et al. [Science 2005 307 p1945]. Although the relative phase evolution is continuously monitored by light-stimulated Bragg scattering of intense laser beams, we show that the phase is created by quantum measurement-induced back-action on the homodyne photo-current of the lasers,
opening possibilities for quantum-enhanced interferometric schemes. We identify two regimes of phase evolution: a running phase regime, that is sensitive to an energy offset and suitable for an interferometer, and a trapped phase regime, that can be insensitive to applied forces and detrimental to interferometric applications.
quantum gases, liquids and solids, quantum information and quantum mechanics
073057-[13pp]
Lee, M.D.
c99e32c7-e47e-46ac-8a24-aecd437fc5f1
Rist, S.
535c5d54-684c-496d-931e-07de43ec07dc
Ruostekoski, J.
2beb155e-64b0-4ee9-9cfe-079947a9c9f4
July 2012
Lee, M.D.
c99e32c7-e47e-46ac-8a24-aecd437fc5f1
Rist, S.
535c5d54-684c-496d-931e-07de43ec07dc
Ruostekoski, J.
2beb155e-64b0-4ee9-9cfe-079947a9c9f4
Lee, M.D., Rist, S. and Ruostekoski, J.
(2012)
Bragg spectroscopic interferometer and quantum measurement-induced correlations in atomic Bose-Einstein condensates.
New Journal of Physics, 14 (73057), .
(doi:10.1088/1367-2630/14/7/073057).
Abstract
We theoretically analyze the Bragg spectroscopic interferometer of two spatially separated atomic Bose-Einstein condensates that was experimentally realized by Saba et al. [Science 2005 307 p1945]. Although the relative phase evolution is continuously monitored by light-stimulated Bragg scattering of intense laser beams, we show that the phase is created by quantum measurement-induced back-action on the homodyne photo-current of the lasers,
opening possibilities for quantum-enhanced interferometric schemes. We identify two regimes of phase evolution: a running phase regime, that is sensitive to an energy offset and suitable for an interferometer, and a trapped phase regime, that can be insensitive to applied forces and detrimental to interferometric applications.
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Submitted date: 20 April 2012
e-pub ahead of print date: 20 April 2012
Published date: July 2012
Keywords:
quantum gases, liquids and solids, quantum information and quantum mechanics
Organisations:
Applied Mathematics
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Local EPrints ID: 338319
URI: http://eprints.soton.ac.uk/id/eprint/338319
PURE UUID: d3c8e024-ebbc-496b-8137-940a4d7c1575
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Date deposited: 15 May 2012 16:05
Last modified: 14 Mar 2024 11:03
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Author:
M.D. Lee
Author:
S. Rist
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