BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Quantum magnetism of ultracold fermions in an optical lattice - Ti
 lman Esslinger (ETH Zurich)
DTSTART:20131007T143000Z
DTEND:20131007T160000Z
UID:TALK47940@talks.cam.ac.uk
CONTACT:6270
DESCRIPTION:We report on the observation of short-range quantum magnetic c
 orrelations of fermionic atoms in an optical lattice. The key to entering 
 the regime of quantum magnetism is a tunable geometry optical lattice\, wh
 ich allows us to locally redistribute the entropy. When loading a low-temp
 erature two-component gas with repulsive interactions into either a dimeri
 zed or anisotropic simple cubic lattice\, we find magnetic correlations on
  neighbouring sites. The correlations manifest as an excess number of sing
 lets as compared to triplets consisting of two atoms with opposite spins. 
 For the anisotropic lattice\, we determine the transverse spin correlator 
 from the singlet-triplet imbalance and observe antiferromagnetic correlati
 ons along one spatial axis. I will further report on experiments in which 
 we have created cold-atom analogues of mesoscopic conductors and supercond
 uctors
LOCATION:Rutherford building\, Seminar Room B
END:VEVENT
END:VCALENDAR