BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Memento EPFL//
BEGIN:VEVENT
SUMMARY:Vortices and superfluidity in Exciton-Polariton condensates
DTSTART:20151030T141500
DTSTAMP:20260427T203420Z
UID:66072cb7df395f3e68a5650c2bb798a18a06fa90b312368729f9d276
CATEGORIES:Conferences - Seminars
DESCRIPTION:Benoît DeveaudLOEQ\, EPFL\nPolaritons are amazing quasipartic
 les originating from the coupling of photons with excitons (electron-hole 
 pairs in semiconductors). Polariton condensates may be created both sponta
 neously through a “standard” phase transition towards a Bose Einstein 
 condensate\, or be resonantly driven with a well-defined initial phase\, s
 peed and spatial distribution.\nThanks to the photonic component of polari
 tons\, the properties of the quantum fluid may be accessed very directly\,
  with in particular the possibility of detailed interferometric studies. T
 his allows for example to probe the long-range coherence properties of a q
 uantum fluid with unprecedented ease. This also allows testing superfluid 
 properties with great precision in space and time.\nIn this talk\, I will 
 describe the static and dynamics of vortices in polariton condensates\, ob
 tained with a picosecond time resolution\, in different configurations\, i
 ncluding their phase configuration. I will show in particular the dynamics
  of spontaneous creation of a vortex as well as the dissociation of a full
  vortex into two half vortices.\nI will also highlight some of the recent 
 results obtained through the shaping of the system\, either using nanotech
 nology processes\, or using all optical means\, or both of them. This allo
 ws in particular the study of the superfluid hydrodynamics of polariton fl
 uids.
LOCATION:CE 1 5 https://plan.epfl.ch/?room==CE%201%205
STATUS:CONFIRMED
END:VEVENT
END:VCALENDAR