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 pi/2 and a maximal plane wavevector. It has been shown that the dynamics of the polariton system is well described by the Schrodinger equation taking into account the finite polariton lifetime and disorder potential in the barrier.
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