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Communication Dans Un Congrès Année : 2015

Quantum chaos and disorder: Simulating quantum disorder with cold atoms

Résumé

Quantum simulation is one of the most active trends in ultracold-atom physics. A quantum simulator is a system that mimics the dynamics of another system; the advantage being that the quantum simulator is simpler than the original, either from the experimental or the theoretical point of view (or both). The Anderson model is a paradigm for quantum disorder, originally introduced in the helm of solid-state physics; however, quantum solid-state disordered systems are very difficult to study experimentally, and even numerically (except in the one-dimensional case). The kicked rotor is a paradigm for classical and quantum Hamiltonian chaos, essentially because it is very easy to simulate it in a computer. Its quantum realization with ultracold atoms is also relatively simple, and is a “clean” (e.g. from decoherence) and controllable system. Amazingly, the quantum kicked rotor can be mathematically mapped onto the Anderson model. It is thus a quite subtle quantum simulator of the physics of disordered systems. In this talk I will describe a series of experiments we have performed in Lille taking advantage of the correspondence between disordered condensed matter systems and the atomic kicked rotor to investigate experimentally in great detail the Anderson metal-insulator transition. I will discuss the new possibilities opened by evolutions of this system, in particular by introducing nonlinearity via atom-atom interactions.
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Dates et versions

hal-01211523 , version 1 (05-10-2015)

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  • HAL Id : hal-01211523 , version 1

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Jean Claude Garreau. Quantum chaos and disorder: Simulating quantum disorder with cold atoms. X Simposio de Lasers e Aplicações - OSA Student Chapter Recife, Sep 2015, Recife, Brazil. ⟨hal-01211523⟩
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