Fractional photon-assisted tunneling for Bose-Einstein condensates in a double well

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Author(s): Niklas Teichmann, Martin Esmann, Christoph Weiss
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Article: Phys. Rev. A 79, 063620 (2009)
Keywords: ouble-well potential, photon-assisted tunneling, Bose-Einstein condensation
PACS: 03.75.Lm, 74.50.+r, 03.65.Xp
Abstract:: Half-integer photon-resonances in a periodically shaken double well are investigated on the level of the N-particle quantum dynamics. Contrary to non-linear mean-field equations, the linear N-particle Schrodinger equation does not contain any non-linearity which could be the origin of such resonances. Nevertheless, analytic calculations on the N-particle level explain why such resonances can be observed even for particle numbers as low as N = 2. These calculations also demonstrate why fractional photon resonances are not restricted to half-integer values.
Copyright: APS
URL: http://de.arxiv.org/abs/0905.2838 (text/plain)