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SUMMARY:Artificial gauge potentials for neutral atoms: from Sagnac's to Be
 rry's phases - Prof. Jean Dalibard\, CNRS and ENS Paris
DTSTART:20101125T141500Z
DTEND:20101125T154500Z
UID:TALK27814@talks.cam.ac.uk
CONTACT:Joe Bhaseen
DESCRIPTION:The simulation of condensed matter systems is certainly one of
  the most appealing perspectives opened by the recent developments in the 
 physics of cold atomic gases. Among the large variety of quantum collectiv
 e phenomena that one hopes to address with atomic vapours\, magnetism is o
 ne of the richest. However the quest for the simulation of magnetism immed
 iately raises a challenging question: how can a system of neutral atoms be
 have as an assembly of charged particles in a magnetic field?\n\nThe talk 
 will review some promising approaches to answer this question both in a bu
 lk system and in an optical lattice. A first already well-explored path is
  to rotate the gas and take advantage of the similarity between Lorentz an
 d Coriolis forces. A second possibility is based on the Berry's phase that
  an atom accumulates when it follows adiabatically one of its internal lev
 els during its motion in a well-chosen energy landscape. In both cases one
  of the main challenges is to produce atomic states that would be analogou
 s of those characteristic of fractional quantum Hall physics.\n
LOCATION:TCM Seminar Room\, Cavendish Laboratory
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