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SUMMARY:Trapping\, cooling and high-fidelity manipulation of cold atoms us
 ing laser pulses - Tim Freegarde (Southampton University)
DTSTART:20140210T153000Z
DTEND:20140210T170000Z
UID:TALK49155@talks.cam.ac.uk
CONTACT:6270
DESCRIPTION:Conventional laser cooling and trapping techniques use stabili
 zed c.w. laser beams to control vapour-phase atoms\, but as a result work 
 only with those species to which the laser is tuned. In contrast\, pulsed 
 techniques promise a degree of insensitivity to the atoms\, or potentially
  molecules\, that are trapped or cooled. The pulsed interactions at the he
 art of such methods resemble the interactions and gates of quantum computa
 tion\, and the pulse sequences prove to be best designed by regarding the 
 atomic system as a momentum-state quantum computer. Error correction metho
 ds\, borrowed from both quantum computation and nuclear magnetic resonance
 \, offer the necessary fidelity in the face of experimental variations. Th
 is talk will outline the theoretical principles of these techniques\, and 
 present some experimental studies of composite pulse error correction\, wh
 ich may be useful for a range of atom interferometry applications. Prelimi
 nary evidence for pulsed interferometric cooling of an atomic sample will 
 also be presented.
LOCATION:Rutherford building\, Seminar Room B
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