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SUMMARY:Four-Dimensional Quantum Hall Effect with Ultracold Atoms - Dr Han
 nah Price\, Universita di Trento
DTSTART:20151015T131500Z
DTEND:20151015T141500Z
UID:TALK59709@talks.cam.ac.uk
CONTACT:Gareth Conduit
DESCRIPTION:We propose a realistic scheme to detect the 4D quantum Hall ef
 fect using ultracold atoms. Based on contemporary technology\, motion alon
 g a synthetic fourth dimension is accomplished through controlled transiti
 ons between internal states of atoms arranged in a 3D optical lattice. Fro
 m a semi-classical analysis\, we identify the linear and non-linear quanti
 zed current responses of our 4D model\, relating these to the topology of 
 the Bloch bands. We then propose experimental protocols\, based on current
  or center-of-mass-drift measurements\, to extract the topological 2nd Che
 rn number. Our proposal sets the stage for the exploration of novel topolo
 gical phases in higher dimensions. 
LOCATION:TCM Seminar Room\, Cavendish Laboratory
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