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12 papers · 1 filter
Geometric potentials in quantum optics: A semi-classical interpretation
Marc Cheneau, Steffen Patrick Rath, Tarik Yefsah +3
We propose a semi-classical interpretation of the geometric scalar and vector potentials that arise due to Berry's phase when an atom moves slowly in a light field. Starting from t…
Conical defects in growing sheets
Martin Michael Mueller, Martine Ben Amar, Jemal Guven
A growing or shrinking disc will adopt a conical shape, its intrinsic geometry characterized by a surplus angle at the apex. If growth is slow, the cone will find its equilibr…
A Maxwell's demon in the generation of an intense and slow guided beam
Gaël Reinaudi, David Guery-Odelin
We analyze quantitatively the generation of a continuous beam of atoms by the periodic injection of individual packets in a guide, followed by their overlapping. We show that slowi…
A quasi-monomode guided atom-laser from an all-optical Bose-Einstein condensate
A. Couvert, M. Jeppesen, T. Kawalec +3
We report the achievement of an optically guided and quasi-monomode atom laser, in all spin projection states ( -1, 0 and ) of F=1 in Rubidium 87. The atom laser source…
The trapped two-dimensional Bose gas: from Bose-Einstein condensation to Berezinskii-Kosterlitz-Thouless physics
Zoran Hadzibabic, Peter Krüger, Marc Cheneau +2
We analyze the results of a recent experiment with bosonic rubidium atoms harmonically confined in a quasi-two-dimensional geometry. In this experiment a well defined critical poin…
Nonlinear NMR dynamics in hyperpolarized liquid 3He
Emmanuel Baudin, Michael E. Hayden, Geneviève Tastevin +1
In a highly polarized liquid (laser-polarized 3He-4He mixtures in our experiment), dipolar magnetic interactions within the liquid introduce a significant nonlinear and nonlocal co…