Control of non-Markovian effects in the dynamics of polaritons in semiconductor microcavities

Abstract

We report on time-resolved photoluminescence from semiconductor microcavities showing that an optically controllable mechanism exists to turn on and off memory effects in a polariton system. By increasing the laser pumping pulse intensity we observe revivals of the decaying time-resolved photoluminescence signal, a manifestly non-Markovian behavior of the optically active polaritons. Based on an open quantum system approach we perform a comprehensive analytical and numerical study of the coupling of optically active polaritons to a structured reservoir to confirm the origin of the observed features. Our findings show that negative detunings and strong excitation should occur simultaneously for memory effects to take place.

8 pages, 5 figures

References in corpus (1)

• Non-Markovian master equations from entanglement with stationary unobserved degrees of freedom

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• Nonequilibrium dynamics of polariton entanglement in a cluster of coupled traps