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SUMMARY:Dr. Matteo Caldara (Monash University)\, Quantum droplets of light
  in semiconductor microcavities
DTSTART:20260522T123000Z
DTEND:20260522T133000Z
DTSTAMP:20260519T110500Z
UID:indico-event-1840@indico.dfa.unipd.it
DESCRIPTION:Speakers: Matteo Caldara (Monash University)\n\nQuantum drople
 ts are self-bound low-density configurations which may appear in ultracold
  gases when the attractive mean-field energy is balanced by the repulsive 
 correction stemming from quantum fluctuations. Since their first predictio
 ns and experimental observations in dilute bosonic mixtures\, the study of
  quantum droplets in cold-atomic settings has recently become a veryactive
  research field. In this talk\, I will show how a similar scenario arises 
 also in solid-state systems\, specifically atomically thin semiconductor l
 ayers. When these materials are embedded in an optical microcavity\, excit
 on-polariton quasiparticles (polaritons) result from the strong couplingbe
 tween semiconductor excitons and cavity photon modes. Mixtures of two spin
  species of polaritons display an exceptional control of the interactions 
 between the different components\, which can be tuned to be either repulsi
 ve or attractive. Similarly to the case of quantum gases\, the subtle bala
 nce between these competing interactions strongly enhances the role of qua
 ntumfluctuations\, leading to a regime where the polariton mixture arrange
 s into a self-bound configuration that can be effectively regarded as a qu
 antum droplet of light. These newly predicted droplets would unveil the el
 usive quantum nature of polariton quasiparticles and open a new promising 
 avenue to achieve the long-sought quantum polaritonic regime\, which is es
 sential torealize new quantum photonic applications in scalable semiconduc
 tors.\n\nhttps://indico.dfa.unipd.it/event/1840/
LOCATION:1/1-2 - Aula "C. Voci" (Dipartimento di Fisica e Astronomia - Edi
 ficio Marzolo)
URL:https://indico.dfa.unipd.it/event/1840/
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