Polariton condensation with saturable molecules dressed by vibrational modes
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.
Citation
Cwik , J , Reja , S , Littlewood , P B & Keeling , J 2014 , ' Polariton condensation with saturable molecules dressed by vibrational modes ' , EPL , vol. 105 , no. 4 , 47009 . https://doi.org/10.1209/0295-5075/105/47009
Publication
EPL
Status
Peer reviewed
ISSN
0295-5075Type
Journal article
Description
JAC acknowledges support from EPSRC, SR from the Cambridge Commonwealth trust, JK from EPSRC program "TOPNES" (EP/I031014/1) and EPSRC (EP/G004714/2). Argonne National Laboratory's work was supported by the U.S. Department of Energy, Office of Basic Energy Sciences under contract No. DE-AC02-06CH11357.Collections
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