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7 papers · 2 filters
Repulsive Casimir forces and the role of surface modes
I. Pirozhenko, A. Lambrecht
The Casimir repulsion between a metal and a dielectric suspended in a liquid has been thoroughly studied in recent experiments. In the present paper we consider surface modes in th…
Effect of vortices on the spin-flip lifetime of atoms in superconducting atom-chips
Gilles Nogues, Cédric Roux, Thomas Nirrengarten +7
We study theoretically the lifetime of magnetically trapped atoms in the close vicinity of a type-II superconducting surface, in the context of superconducting atom-chips. We accou…
Ultracold Fermions in a Graphene-Type Optical Lattice
Kean Loon Lee, Benoit Gremaud, Rui Han +2
Some important features of the graphene physics can be reproduced by loading ultracold fermionic atoms in a two-dimensional optical lattice with honeycomb symmetry and we address h…
Tackling the Gross-Pitaevskii energy functional with the Sobolev gradient - Analytical and numerical results
P. Kazemi, M. Eckart
In the first part of this contribution we prove the global existence and uniqueness of a trajectory that globally converges to the minimizer of the Gross-Pitaevskii energy function…
Heisenberg-Weyl algebra revisited: Combinatorics of words and paths
P. Blasiak, A. Horzela, G. H. E. Duchamp +2
The Heisenberg-Weyl algebra, which underlies virtually all physical representations of Quantum Theory, is considered from the combinatorial point of view. We provide a concrete mod…
An effective method to estimate multidimensional Gaussian states
J. Rehacek, S. Olivares, D. Mogilevtsev +6
A simple and efficient method for characterization of multidimensional Gaussian states is suggested and experimentally demonstrated. Our scheme shows analogies with tomography of f…