Adiabatic geometric phase for a Bose-Einstein condensate coupled to a cavity
Adiabatic geometric phase for a Bose-Einstein condensate coupled to a cavity
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耦合到空腔的玻色-爱因斯坦凝聚体的绝热几何相
DOI:
10.1103/physreva.84.053610
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发表时间:
2011-11
影响因子:
2.9
通讯作者:
Liu, Jie
中科院分区:
文献类型:
--
作者:
Li, Sheng-Chang;Fu, Li-Bin;Liu, Jie
We investigate the geometric phase in a model of a Bose-Einstein condensate coupled to an optical cavity in which both the condensate and the cavity are described with coherent states. When the argument of the atom-cavity coupling term varies in time slowly from zero to 2{pi}, we calculate the geometric phase accumulated by the ground state and obtain its analytic expression in explicit form. We find that the adiabatic geometric phase jumps from zero to nontrivial {pi} at a critical value that corresponds to the normal-superradiant phase-transition point. The magneticlike flux interpretation of the geometric phase is also discussed.
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影响因子:
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DOI:
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期刊:
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