Periodic modulation effect on selftrapping of two weakly coupled BoseEinstein condensates
Abstract
With phase space analysis approach, we investigate the selftrapping phenomenon for two weakly coupled BoseEinstein condensates (BECs) in a symmetric double well potential. We identify two kinds of selftrapping by their different relative phase behavior. By applying a periodic modulation on the energy bias of the system we find that the selftrapping can be controlled, in other words, the transition parameters can be adjusted effectively by the periodic modulation. Analytic expressions for the dependence of the transition parameters on the modulation parameters are derived for high and lowfrequency modulations. For an intermediatefrequency modulation, we find the resonance between the periodic modulation and nonlinear Rabi oscillation dramatically affect the tunneling dynamics and demonstrate many phenomena. Finally, we study the effects of manybody quantum fluctuation on the selftrapping and discuss the possible experimental realization.
 Authors:
 Institute of Applied Physics and Computational Mathematics, P.O. Box 8009 (28), 100088 Beijing (China)
 (China)
 Publication Date:
 OSTI Identifier:
 20786761
 Resource Type:
 Journal Article
 Resource Relation:
 Journal Name: Physical Review. A; Journal Volume: 73; Journal Issue: 1; Other Information: DOI: 10.1103/PhysRevA.73.013619; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 74 ATOMIC AND MOLECULAR PHYSICS; BOSEEINSTEIN CONDENSATION; FLUCTUATIONS; FREQUENCY MODULATION; MANYBODY PROBLEM; NONLINEAR PROBLEMS; OPTICS; OSCILLATIONS; PERIODICITY; PHASE SPACE; POTENTIALS; RESONANCE; TRAPPING; TUNNEL EFFECT
Citation Formats
Wang Guanfang, Institute of Physical Science and Technology, Lanzhou University, 730000 Lanzhou, Fu Libin, and Liu Jie. Periodic modulation effect on selftrapping of two weakly coupled BoseEinstein condensates. United States: N. p., 2006.
Web. doi:10.1103/PHYSREVA.73.0.
Wang Guanfang, Institute of Physical Science and Technology, Lanzhou University, 730000 Lanzhou, Fu Libin, & Liu Jie. Periodic modulation effect on selftrapping of two weakly coupled BoseEinstein condensates. United States. doi:10.1103/PHYSREVA.73.0.
Wang Guanfang, Institute of Physical Science and Technology, Lanzhou University, 730000 Lanzhou, Fu Libin, and Liu Jie. Sun .
"Periodic modulation effect on selftrapping of two weakly coupled BoseEinstein condensates". United States.
doi:10.1103/PHYSREVA.73.0.
@article{osti_20786761,
title = {Periodic modulation effect on selftrapping of two weakly coupled BoseEinstein condensates},
author = {Wang Guanfang and Institute of Physical Science and Technology, Lanzhou University, 730000 Lanzhou and Fu Libin and Liu Jie},
abstractNote = {With phase space analysis approach, we investigate the selftrapping phenomenon for two weakly coupled BoseEinstein condensates (BECs) in a symmetric double well potential. We identify two kinds of selftrapping by their different relative phase behavior. By applying a periodic modulation on the energy bias of the system we find that the selftrapping can be controlled, in other words, the transition parameters can be adjusted effectively by the periodic modulation. Analytic expressions for the dependence of the transition parameters on the modulation parameters are derived for high and lowfrequency modulations. For an intermediatefrequency modulation, we find the resonance between the periodic modulation and nonlinear Rabi oscillation dramatically affect the tunneling dynamics and demonstrate many phenomena. Finally, we study the effects of manybody quantum fluctuation on the selftrapping and discuss the possible experimental realization.},
doi = {10.1103/PHYSREVA.73.0},
journal = {Physical Review. A},
number = 1,
volume = 73,
place = {United States},
year = {Sun Jan 15 00:00:00 EST 2006},
month = {Sun Jan 15 00:00:00 EST 2006}
}

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