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UID:69e22de688418
DTSTART:20260226T090000Z
SEQUENCE:0
TRANSP:OPAQUE
LOCATION:ICFO Auditorium
SUMMARY:ICFO | TOMAS LAMICH
CLASS:PUBLIC
DESCRIPTION:This thesis studies the statistics of light produced by a singl
 e trapped atom in free space when interfaced with two orthogonal coherent 
 beams. The atom scatters light into the same spatial mode as a weak cohere
 nt probe beam\, giving rise to controllable photon statistics. Being able 
 to control the photon statistics of a source can be used in applications i
 n where different photon statistics are desired.\nA single emitter in free
  space\, when left to interact with a single pumping beam can only scatter
  one photon at any given moment leading to anti-bunched photon statistics.
  However\, Goncalves et al. (2021) studied the possibility of interfacing 
 the atom with a strong pumping beam\, and a weak probing beam\, leading to
  a controllable photon statistics\, where super- and sub-Poissonian statis
 tics can be achieved by varying either the pump-probe ratio or the relativ
 e pump-probe phase. By controlling the pump-probe ratio\, it is also possi
 ble to control the probe transmission through the atom.\nThe experimental 
 implementation of the \"GMC\" scheme shows the predicted behaviour where t
 he transmission can be suppressed to 62 %\, and tuned by changing the pump
 -probe ratio. It also shows that the photon statistics can go from super- 
 to sub-Poissonian by changing the relative pump-probe phase\, and the phot
 on bunching achieved is also pump-probe ratio dependent.\nIn addition\, me
 asurements of the atom temperature are presented in this thesis\, where th
 e interference of the pump and probe beams on the atom lead to a direct me
 asurements of the rms displacement of the atom within the trap\, which is 
 linked directly to the atom temperature. These measurements demonstrate a 
 new non-destructive method of estimating the atom temperature.\n&nbsp\;\nT
 hursday\, February 26\, 10:00 h. ICFO Auditorium \nThesis Director: Prof. 
 Dr. Morgan Mitchell and Dr. Romain Veyron 
DTSTAMP:20260417T125606Z
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