Detection of spatial correlations in an ultracold gas of fermions.
Spatial correlations are observed in an ultracold gas of fermionic atoms close to a Feshbach resonance. The correlations are detected by inducing spin-changing rf transitions between pairs of atoms. We observe the process in the strongly interacting regime for attractive as well as for repulsive atom-atom interactions and both in the regime of high and low quantum degeneracy. The observations are compared with a two-particle model that provides theoretical predictions for the measured rf transition rates.
Greiner
M
M
JILA, University of Colorado and National Institute of Standards and Technology, Department of Physics, Boulder, Colorado 80309-0440, USA. markus.greiner@colorado.edu
Regal
C A
CA
Ticknor
C
C
Bohn
J L
JL
Jin
D S
DS