Experimental study of the quantum driven pendulum and its classical analogue in atoms optics

Hensinger, W K, Truscott, A G, Upcroft, B, Hug, M, Wiseman, H M, Heckenberg, N R and Rubinsztein-Dunlop, H (2001) Experimental study of the quantum driven pendulum and its classical analogue in atoms optics. Physical Review A, 64 (3). 033407. ISSN 1050-2947

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Abstract

We present experimental results for the dynamics of cold atoms in a far detuned amplitude-modulated optical standing wave. Phase-space resonances constitute distinct peaks in the atomic momentum distribution containing up to 65% of all atoms resulting from a mixed quantum chaotic phase space. We characterize the atomic behavior in classical and quantum regimes and we present the applicable quantum and classical theory, which we have developed and refined. We show experimental proof that the size and the position of the resonances in phase space can be controlled by varying several parameters, such as the modulation frequency, the scaled well depth, the modulation amplitude, and the scaled Planck's constant of the system. We have found a surprising stability against amplitude noise. We present methods to accurately control the momentum of an ensemble of atoms using these phase-space resonances which could be used for efficient phase-space state preparation.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Depositing User: Winfried Hensinger
Date Deposited: 06 Feb 2012 20:22
Last Modified: 07 Mar 2017 06:16
URI: http://sro.sussex.ac.uk/id/eprint/25663

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