Results 101 to 110 of about 912,798 (201)

Condensation of pairs of fermionic atoms near a Feshbach resonance

open access: yes, 2004
We have observed Bose-Einstein condensation of pairs of fermionic atoms in an ultracold 6Li gas at magnetic fields above a Feshbach resonance, where no stable 6Li2 molecules would exist in vacuum. We accurately determined the position of the resonance to
Ketterle, W.   +7 more
core   +1 more source

Fourier transforming a trapped Bose-Einstein condensate by waiting a quarter of the trap period: simulation and applications [PDF]

open access: yes, 2006
We investigate the property of isotropic harmonic traps to Fourier transform a weakly interacting Bose–Einstein condensate (BEC) every quarter of a trap period.
Ohberg, Patrik; id_orcid   +5 more
core   +1 more source

Repeated output coupling of ultracold Feshbach molecules from a Cs BEC

open access: yesNew Journal of Physics, 2014
We investigate magnetoassociation of ultracold Feshbach molecules from a Bose-Einstein condensate of Cs atoms and explore the spectrum of weakly bound molecular states close to the atomic threshold.
M P Köppinger   +5 more
doaj   +1 more source

Feshbach resonance in a synthetic non-Abelian gauge field

open access: yes, 2014
We study the Feshbach resonance of spin-1/2 particles in a uniform synthetic non-Abelian gauge field that produces spin-orbit coupling and constant spin potentials. We develop a renormalizable quantum field theory including the closed-channel boson which
Shenoy, Vijay B, Shenoy, Vijay B.
core   +1 more source

Fulde–Ferrell superfluidity in ultracold Fermi gases with Rashba spin–orbit coupling

open access: yesNew Journal of Physics, 2013
We theoretically investigate the inhomogeneous Fulde–Ferrell (FF) superfluidity in a three-dimensional atomic Fermi gas with Rashba spin–orbit coupling near a broad Feshbach resonance.
Hui Hu, Xia-Ji Liu
doaj   +1 more source

A simple, versatile laser system for the creation of ultracold ground state molecules

open access: yesNew Journal of Physics, 2015
A narrow-linewidth, dual-wavelength laser system is vital for the creation of ultracold ground state molecules via stimulated Raman adiabatic passage (STIRAP) from a weakly bound Feshbach state.
P D Gregory   +7 more
doaj   +1 more source

Exploring Atom-Ion Feshbach Resonances below the s-Wave Limit

open access: yesPhysical Review X
Hybrid systems of single, trapped ions embedded in quantum gases are a promising platform for quantum simulations and the study of long-range interactions in the ultracold regime.
Fabian Thielemann   +7 more
doaj   +1 more source

Biexciton as a Feshbach resonance and Bose–Einstein condensation of paraexcitons in Cu2O

open access: yesNew Journal of Physics, 2019
Paraexcitons, the lowest energy exciton states in Cu _2 O, have been considered a good system for realizing exciton Bose–Einstein condensation (BEC). The fact that their BEC has not been attained so far is attributed to a collision-induced loss, whose ...
Cam Ngoc Hoang
doaj   +1 more source

BCS,BEC states and Feshbach resonance in atomic Fermi gases

open access: yes, 2007
To study the behavior of atomic Fermi gases in the vicinity of Feshbach resonance, M. Holland et al. [12] and S. J. J. M. F. Kokkelmans et al. [22] proposed resonance mean field theory in which the molecules formed by Feshbach resonance are considered in
呂欣頤, Lu, Hsin-I
core  

Controlling Condensate Collapse and Expansion with an Optical Feshbach Resonance

open access: yes, 2013
We demonstrate control of the collapse and expansion of an Sr88 Bose-Einstein condensate using an optical Feshbach resonance near the S01−P13 intercombination transition at 689 nm. Significant changes in dynamics are caused by modifications of scattering
Ramachandhran, B.   +4 more
core   +1 more source

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