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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:3
UID:UW-Physics-Event-8577
DTSTART:20240212T180000Z
DTEND:20240212T190000Z
DTSTAMP:20260413T223311Z
LAST-MODIFIED:20240206T153012Z
LOCATION:5310 Chamberlin Hall
SUMMARY:Quantum metrology with an optical lattice atom interferometer 
 interrogated for one minute\, Atomic Physics Seminar\, Cristian Panda\
 , UC Berkeley
DESCRIPTION:Exceptional levels of quantum control and coherence are in
 strumental in quantum metrology and sensing. Atom interferometers are 
 powerful in both probing fundamental physics and everyday sensing but 
 have been limited to measurement times of a few seconds by using atoms
  in free fall. I will describe how we realize interferometers with ato
 ms suspended for an unprecedented 70 seconds in an optical lattice. Th
 is method is particularly well suited for probing localized potentials
 . I will show how\, for the first time\, we (1) optimize the gravitati
 onal sensitivity of the lattice interferometer and (2) use a system of
  signal inversions and switches to suppress and quantify systematic ef
 fects. This enables us to measure the attraction of a miniature source
  mass with record accuracy of 6.2 nm/s2\, less than a billionth of Ear
 th’s gravity and four times as good as the best similar measurements
  with freely falling atoms. This performance demonstrates the advantag
 es of lattice interferometry in fundamental physics measurements. I wi
 ll then show how the lattice atom interferometer can overcome the limi
 ts of current atomic gravimeters for applications in the field. Finall
 y\, I will discuss prospects for next-generation lattice atom interfer
 ometers and applications in precision measurement and quantum inertial
  sensing.
URL:https://www.physics.wisc.edu/events/?id=8577
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