Results 21 to 30 of about 144,548 (197)

Excitations in a nonequilibrium Bose-Einstein condensate of exciton polaritons. [PDF]

open access: yesPhysical Review Letters, 2007
We develop a mean-field theory of the dynamics of a nonequilibrium Bose-Einstein condensate of exciton polaritons in a semiconductor microcavity. The spectrum of elementary excitations around the stationary state is analytically studied by means of a ...
M. Wouters, I. Carusotto
semanticscholar   +1 more source

All-optical formation of an atomic Bose-Einstein condensate. [PDF]

open access: yesPhysical Review Letters, 2001
We have created a Bose-Einstein condensate (BEC) of 87Rb atoms directly in an optical trap. We employ a quasielectrostatic dipole force trap formed by two crossed CO2 laser beams. Loading directly from a sub-Doppler laser-cooled cloud of atoms results in
M. Barrett, J. Sauer, M. Chapman
semanticscholar   +1 more source

Resonances for coupled Bose-Einstein Condensates [PDF]

open access: yes, 2004
We study some effects arising from periodic modulation of the asymmetry and the barrier height of a two-well potential containing a Bose-Einstein condensate.
A. M. Perelomov   +3 more
core   +1 more source

Observation of persistent flow of a Bose-Einstein condensate in a toroidal trap. [PDF]

open access: yesPhysical Review Letters, 2007
We have observed the persistent flow of Bose-condensed atoms in a toroidal trap. The flow persists without decay for up to 10 s, limited only by experimental factors such as drift and trap lifetime.
C. Ryu   +8 more
semanticscholar   +1 more source

Path-Integral Monte Carlo Study on a Droplet of a Dipolar Bose–Einstein Condensate Stabilized by Quantum Fluctuation [PDF]

open access: yes, 2016
Motivated by recent experiments [H. Kadau et al., Nature (London) 530, 194 (2016); I. Ferrier-Barbut et al., arXiv:1601.03318] and theoretical prediction (F. Wachtler and L.
H. Saito
semanticscholar   +1 more source

Fragmented Superradiance of a Bose-Einstein Condensate in an Optical Cavity. [PDF]

open access: yesPhysical Review Letters, 2016
The Dicke model and the superradiance of two-level systems in a radiation field have many applications. Recently, a Dicke quantum phase transition has been realized with a Bose-Einstein condensate in a cavity.
A. Lode, C. Bruder
semanticscholar   +1 more source

Transition of a mesoscopic bosonic gas into a Bose-Einstein condensate

open access: yes, 2011
The condensate number distribution during the transition of a dilute, weakly interacting gas of N=200 bosonic atoms into a Bose-Einstein condensate is modeled within number conserving master equation theory of Bose-Einstein condensation.
Schelle, Alexej
core   +1 more source

Bell correlations in a Bose-Einstein condensate [PDF]

open access: yesScience, 2016
Correlating an atomic condensate Parts of a quantum system can be more “correlated” than what is allowed in the everyday classical world: A measurement on one part of the system can immediately affect a spatially distant component.
R. Schmied   +6 more
semanticscholar   +1 more source

Observation of Bose-Einstein Condensation of Molecules

open access: yes, 2003
We have observed Bose-Einstein condensation of molecules. When a spin mixture of fermionic Li-6 atoms was evaporatively cooled in an optical dipole trap near a Feshbach resonance, the atomic gas was converted into Li_2 molecules.
Gupta, S.   +6 more
core   +1 more source

Crossover from a molecular Bose-Einstein condensate to a degenerate Fermi gas. [PDF]

open access: yesPhysical Review Letters, 2004
We demonstrate a reversible conversion of a 6Li2 molecular Bose-Einstein condensate to a degenerate Fermi gas of atoms by adiabatically crossing a Feshbach resonance.
M. Bartenstein   +6 more
semanticscholar   +1 more source

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