We discuss the dynamics of a Bose-Einstein condensate in a double-well trap subject to phase noise and particle loss. The phase coherence of a weakly interacting condensate as well as the response to an external driving show a pronounced stochastic resonance effect: Both quantities become maximal for a finite value of the dissipation rate matching the intrinsic time scales of the system. Even stronger effects are observed when dissipation acts in concurrence with strong interparticle interactions, restoring the purity of the condensate almost completely and increasing the phase coherence significantly.

Dissipation induced coherence of a two-mode Bose-Einstein condensate / D., Witthaut; F., Trimborn; Wimberger, Sandro Marcel. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 101:20(2008), p. 200402. [10.1103/PhysRevLett.101.200402]

Dissipation induced coherence of a two-mode Bose-Einstein condensate.

WIMBERGER, Sandro Marcel
2008-01-01

Abstract

We discuss the dynamics of a Bose-Einstein condensate in a double-well trap subject to phase noise and particle loss. The phase coherence of a weakly interacting condensate as well as the response to an external driving show a pronounced stochastic resonance effect: Both quantities become maximal for a finite value of the dissipation rate matching the intrinsic time scales of the system. Even stronger effects are observed when dissipation acts in concurrence with strong interparticle interactions, restoring the purity of the condensate almost completely and increasing the phase coherence significantly.
2008
Dissipation induced coherence of a two-mode Bose-Einstein condensate / D., Witthaut; F., Trimborn; Wimberger, Sandro Marcel. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 101:20(2008), p. 200402. [10.1103/PhysRevLett.101.200402]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11381/2696698
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