Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Bragg spectroscopic interferometer and quantum measurement-induced correlations in atomic Bose-Einstein condensates
AU - Lee, M.D.
AU - Rist, S.
AU - Ruostekoski, J.
PY - 2012/7/31
Y1 - 2012/7/31
N2 - 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.
AB - 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.
KW - quantum gases
KW - liquids and solids
KW - quantum information and quantum mechanics
U2 - 10.1088/1367-2630/14/7/073057
DO - 10.1088/1367-2630/14/7/073057
M3 - Journal article
VL - 14
JO - New Journal of Physics
JF - New Journal of Physics
SN - 1367-2630
IS - 73057
M1 - 073057
ER -