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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:0
UID:UW-Physics-Event-1749
DTSTART:20100202T160000Z
DURATION:PT1H0M0S
DTSTAMP:20260422T131434Z
LAST-MODIFIED:20100119T145750Z
LOCATION:5310 Chamberlin
SUMMARY:Coherent transport in driven optical lattices\, R. G. Herb Con
 densed Matter Seminar\, Andrea Alberti\, European Laboratory for Non-L
 inear Spectroscopy
DESCRIPTION:We present a dynamical control of transport of ultra-cold 
 88Sr atoms loaded in a driven optical lattice. By introducing a modula
 tion of an accelerated lattice potential we induce a controlled coupli
 ng between Wannier-Stark states  located on different lattice sites. T
 his coupling gives rise to coherent resonant delocalization when the m
 odulation frequency matches the energy separation between adjacent sit
 es\, namely the Bloch frequency. We apply this mechanism to engineer a
  coherent transport over macroscopic distances\, and we demonstrate on
 e realization of Loschmidt echos. On the other hand\, the same transpo
 rt mechanism can be applied to micron scale to measure forces with hig
 h spatial resolution and ppm sensitivity.
URL:https://www.physics.wisc.edu/events/?id=1749
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