Routes towards the experimental observation of the large fluctuations due to chaos-assisted tunneling effects with cold atoms
نویسندگان
چکیده
منابع مشابه
Chaos-assisted tunneling with cold atoms.
In the context of quantum chaos, both theory and numerical analysis predict large fluctuations of the tunneling transition probabilities when irregular dynamics is present at the classical level. Here we consider the nondissipative quantum evolution of cold atoms trapped in a time-dependent modulated periodic potential generated by two laser beams. We give some precise guidelines for the observ...
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www.sciencemag.org (this information is current as of January 8, 2007 ): The following resources related to this article are available online at http://www.sciencemag.org version of this article at: including high-resolution figures, can be found in the online Updated information and services, http://www.sciencemag.org/cgi/content/full/1061569/DC1 can be found at: Supporting Online Material fou...
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We study quantum dynamical tunneling between two symmetry-related islands of stability in the phase space of a classically chaotic system. The setting for these experiments is the motion of carefully prepared samples of cesium atoms in an amplitude-modulated standing wave of light. We examine the dependence of the tunneling dynamics on the system parameters and indicate how the observed feature...
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The hallmark of classical chaos in the motion of an ensemble of particles is diffusive growth in momentum and position. A system of quantum particles, in contrast, was predicted by Casati et al. to diffuse in phase space only for a limited time, following the classical prediction [1]. The diffusion is predicted to cease after the “quantum break time” due to quantum interference, and the momentu...
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We present the first experimental observation of resonance-assisted tunneling, a wave phenomenon, where regular-to-chaotic tunneling is strongly enhanced by the presence of a classical nonlinear resonance chain. For this we use a microwave cavity made of oxygen free copper with the shape of a desymmetrized cosine billiard designed with a large nonlinear resonance chain in the regular region. It...
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ژورنال
عنوان ژورنال: Physical Review A
سال: 2016
ISSN: 2469-9926,2469-9934
DOI: 10.1103/physreva.94.043621