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

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

2008-03-07

arxiv.org/abs/0803.1159v1

Phys. Rev. B 78, 035312 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

8 pages, 5 figures

Scientific paper

10.1103/PhysRevB.78.035312

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.

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