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UID:69d255b665523
DTSTART:20230616T130000Z
SEQUENCE:0
TRANSP:OPAQUE
LOCATION:ICFO Auditorium and Online (Teams)
SUMMARY:ICFO | NATALIA DOMINGUES ALVES
CLASS:PUBLIC
DESCRIPTION:This thesis studies\, using simulation and experiment\, the mot
 ional dynamics of a single atom in an optical dipole trap. The optical dip
 ole trap we study is a single-beam\, red-detuned\, far-off-resonance trap 
 (FORT). This FORT is located at the centre of an arrangement of four high-
 NA lenses in the \"Maltese cross'' geometry\, which facilitates measuremen
 ts based on atomic fluorescence. We make a detailed study\, combining simu
 lation with experimental measurements\, of the temperature of the atom in 
 this system. We note reasons why a single-temperature description could fa
 il to describe the motional statistics of the atom in the trap. We then st
 udy the sensitivity of an established method\, the release-and-recapture\,
  to a possible anisotropic temperature distribution of the atom. We also m
 easure the optical extinction produced by the atom\, from which we extract
  a lower bound on the strength of interaction. Finally\, we show with simu
 lation results and experiments\, how parametric excitation of the atom in 
 the FORT can be used to manipulate its phase-space distribution\, which ca
 n lead to an effective decrease or increase of the atom's kinetic energy.\
 nThesis Director: Prof Dr. Morgan W. Mitchell
DTSTAMP:20260405T122942Z
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