Free fermion antibunching in a degenerate atomic Fermi gas released from an optical lattice

Details Free fermion antibunching in a degenerate atomic Fermi gas released from an optical lattice Free fermion antibunching in a degenerate atomic Fermi gas released from an optical lattice

2006-11-21

arxiv.org/abs/cond-mat/0611561v1

Nature, Vol 444, 733-736 (2006)

Physics

Condensed Matter

Other Condensed Matter

(Nature, in press)

Scientific paper

10.1038/nature05319

Noise in a quantum system is fundamentally governed by the statistics and the many-body state of the underlying particles. Whereas for bosonic particles the correlated noise observed for e.g. photons or bosonic neutral atoms can still be explained within a classical field description with fluctuating phases, the anticorrelations in the detection of fermionic particles have no classical analogue. The observation of such fermionic antibunching is so far scarce and has been confined to electrons and neutrons. Here we report on the first direct observation of antibunching of neutral fermionic atoms. Through an analysis of the atomic shot noise in a set of standard absorption images, of a gas of fermionic 40K atoms released from an optical lattice, we find reduced correlations for distances related to the original spacing of the trapped atoms. The detection of such quantum statistical correlations has allowed us to characterise the ordering and temperature of the Fermi gas in the lattice. Moreover, our findings are an important step towards revealing fundamental fermionic many-body quantum phases in periodic potentials, which are at the focus of current research.

Affiliated with

Also associated with

No associations

Rating

Free fermion antibunching in a degenerate atomic Fermi gas released from an optical lattice does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Free fermion antibunching in a degenerate atomic Fermi gas released from an optical lattice, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Free fermion antibunching in a degenerate atomic Fermi gas released from an optical lattice will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-338454