How to characterize the dynamics of cold atoms in non dissipative optical lattices
TLDR
The dynamics of classical cold atoms have been investigated, mainly through instabilities of the disordered cloud produced by a magneto-optical trap, but the richer dynamics is expected in ordered potential, as those obtained with optical lattices.Abstract:
We examine here the classical dynamics of cold atoms in square optical lattices, i.e. lattices obtained with two orthogonal stationary plane waves. Contrary to much of the past studies in this domain, the potential is here time independent and non dissipative. We show that, as a function of the experimental parameters, very different behaviors are obtained, both for the dynamics of atoms trapped inside individual sites, and for atoms travelling between sites: inside the sites, chaos may be a main regime or, on the contrary, may be negligible; outside the sites, chaos sometimes coexists with other regimes. We discuss what are the consequences of these differences on the macroscopic behavior of the atoms in the lattice, and we propose experimental measurements able to characterize these dynamics and to distinguish between the different cases.read more
Citations
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Synchronization in non dissipative optical lattices
TL;DR: In this article, the authors studied the dynamics of cold atoms inside a well of a red detuned lattice, with the aim to understand the dynamical mechanisms leading to the disappearance of chaos.
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Quantum–classical correspondence in chaotic dynamics of laser-driven atoms
TL;DR: In this paper, a review article on some aspects of quantum-classical correspondence in chaotic dynamics of cold atoms interacting with a standing-wave laser field forming an optical lattice is presented.
References
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Journal ArticleDOI
Quantum Phase Transition From a Superfluid to a Mott Insulator in a Gas of Ultracold Atoms
TL;DR: This work observes a quantum phase transition in a Bose–Einstein condensate with repulsive interactions, held in a three-dimensional optical lattice potential, and can induce reversible changes between the two ground states of the system.
Journal ArticleDOI
Anderson localization of a non-interacting Bose-Einstein condensate.
G. Roati,Chiara D'Errico,Leonardo Fallani,Marco Fattori,Chiara Fort,Matteo Zaccanti,Giovanni Modugno,Michele Modugno,Michele Modugno,Massimo Inguscio +9 more
TL;DR: This work uses a non-interacting Bose–Einstein condensate to study Anderson localization of waves in disordered media and describes the crossover, finding that the critical disorder strength scales with the tunnelling energy of the atoms in the lattice.
Journal ArticleDOI
Direct observation of Anderson localization of matter waves in a controlled disorder
Juliette Billy,Vincent Josse,Zhanchun Zuo,Alain Bernard,Ben Hambrecht,Pierre Lugan,David Clément,Laurent Sanchez-Palencia,Philippe Bouyer,Alain Aspect +9 more
TL;DR: This work directly image the atomic density profiles as a function of time, and finds that weak disorder can stop the expansion and lead to the formation of a stationary, exponentially localized wavefunction—a direct signature of Anderson localization.
Journal ArticleDOI
Tonks–Girardeau gas of ultracold atoms in an optical lattice
B. Paredes,Artur Widera,Valentin Murg,Olaf Mandel,Simon Fölling,Ignacio Cirac,G. V. Shlyapnikov,G. V. Shlyapnikov,Theodor W. Hänsch,Immanuel Bloch +9 more
TL;DR: A theoretical prediction of the momentum distribution is made based on an approach in which trapped bosons acquire fermionic properties, finding that it agrees closely with the measured distribution.
Journal ArticleDOI
The cold atom Hubbard toolbox
TL;DR: In this paper, the authors review recent theoretical advances in cold atom physics concentrating on strongly correlated cold atoms in optical lattices and discuss recently developed quantum optical tools for manipulating atoms and show how they can be used to realize a wide range of many body Hamiltonians.