Abstract
The excitation of exciton polariton spatial oscillations in coupled symmetric potential traps in GaAs/AlAs microcavities resonantly pumped by coherent and incoherent pulsed picosecond optical beams with asymmetric angular distribution has been studied. It has been found that the violation of the angular symmetry of exciting pulses, as well as the violation of their spatial symmetry, can be used to excite a mixed state of the symmetric and asymmetric modes in a coupled potential trap. With uniform resonant excitation of traps at an optimal angles to the normal to the microcavity, light pulses generate a state with a mode phase difference of π/2 and a maximal plane wavevector. It has been shown that the dynamics of the polariton system is well described by the Schrödinger equation taking into account the finite polariton lifetime and disorder potential in the barrier.
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ACKNOWLEDGMENTS
The authors express their deep gratitude to P. Savvidis for the high-quality MC structure and S.S. Gavrilov and S.G. Tikhodeev for fruitful discussions.
Funding
The study was supported by the Russian Science Foundation, grant no. 21-12-00368.
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This article was prepared for the special issue of Journal of Experimental and Theoretical Physics dedicated to the 95th birthday of Professor E.I. Rashba.
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Demenev, A.A., Kulakovskii, V.D., Tereshko, S.N. et al. Influence of the Angular Symmetry of an Exciting Optical Beam on the Dynamics of Cavity Exciton Polaritons in Coupled Potential Traps. J. Exp. Theor. Phys. 135, 440–447 (2022). https://doi.org/10.1134/S1063776122100132
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DOI: https://doi.org/10.1134/S1063776122100132