Polariton condensation with saturable molecules dressed by vibrational modes

Justyna Cwik, Sahinur Reja, Peter B. Littlewood, Jonathan Keeling

Research output: Contribution to journalArticlepeer-review

54 Citations (Scopus)
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Abstract

Polaritons, mixed light-matter quasiparticles, undergo a transition to a condensed, macroscopically coherent state at low temperatures or high densities. Recent experiments show that coupling light to organic molecules inside a microcavity allows condensation at room temperature. The molecules act as saturable absorbers with transitions dressed by molecular vibrational modes. Motivated by this, we calculate the phase diagram and spectrum of a modified Tavis-Cummings model, describing vibrationally dressed two-level systems, coupled to a cavity mode. Coupling to vibrational modes can induce re-entrance, i.e. a normal-condensed-normal sequence with decreasing temperature and can drive the transition first-order.
Original languageEnglish
Article number47009
Number of pages6
JournalEPL
Volume105
Issue number4
DOIs
Publication statusPublished - 3 Mar 2014

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