Efficient many-body non-Markovian dynamics of organic polaritons
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We show how to simulate a model of many molecules with both strong coupling to many vibrational modes and collective coupling to a single photon mode. We do this by combining process tensor matrix product operator methods with a mean-field approximation which reduces the dimension of the problem. We analyze the steady-state of the model under incoherent pumping to determine the dependence of the polariton lasing threshold on cavity detuning, light-matter coupling strength, and environmental temperature. Moreover, by measuring two-time correlations, we study quadratic fluctuations about the mean-field to calculate the photoluminescence spectrum. Our method enables one to simulate many-body systems with strong coupling to multiple environments, and to extract both static and dynamical properties.
Fowler-Wright , P , Lovett , B W & Keeling , J 2022 , ' Efficient many-body non-Markovian dynamics of organic polaritons ' , Physical Review Letters , vol. 129 , no. 17 , 173001 . https://doi.org/10.1103/PhysRevLett.129.173001
Physical Review Letters
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DescriptionFunding: P.F.-W. acknowledges support from EPSRC (EP/T518062/1). B.W.L. and J.K. acknowledge support from EPSRC (EP/T014032/1).
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