Phys. Rev. Lett. 92, 150405 (2004) [4 pages]

Detection of Spatial Correlations in an Ultracold Gas of Fermions

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M. Greiner^*, C. A. Regal, C. Ticknor, J. L. Bohn, and D. S. Jin^†
JILA, University of Colorado and National Institute of Standards and Technology, and Department of Physics, University of Colorado, Boulder, Colorado 80309-0440, USA

Received 26 August 2003; published 15 April 2004

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.

URL:

http://link.aps.org/doi/10.1103/PhysRevLett.92.150405

DOI:

10.1103/PhysRevLett.92.150405

PACS:

03.75.Ss, 34.50.–s

^*Electronic address: markus.greiner@colorado.edu

URL: http://jilawww.colorado.edu/~jin/

^†Permanent address: Quantum Physics Division, National Institute of Standards and Technology.

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Phys. Rev. Lett. 92, 150405 (2004) [4 pages]

Detection of Spatial Correlations in an Ultracold Gas of Fermions