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Abstract <p>The authors study the temporal evolution of polarized spectra of emissions from spinor exciton‒polariton condensates in double tunnel-coupled potential traps inside a high-<i>Q</i> GaAs/AlAs microcavity at 2 K under resonance laser pumping with picosecond pulses at times of up to 1.5 ns. The time of the condensates’ spin relaxation in a double trap is estimated as τ<sub>s</sub> ≈ 10 ns. The effect of tunnel interaction and anisotropy of the trap potential on the energy spectrum of the polariton modes and the polarization dynamics of the spinor condensate in tunnel-coupled potential traps is discussed.</p>

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Dynamics of Spinor Exciton‒Polariton Condensates in Double Potential Traps in GaAs/AlAs Microcavities under the Resonance Picosecond Excitation

  • 期刊论文

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  • 发表日期：

    2025年2月1日

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  • A. A. Demenev,
  • S. N. Tereshko,
  • N. A. Gippius,
  • V. D. Kulakovskii

摘要

Abstract

The authors study the temporal evolution of polarized spectra of emissions from spinor exciton‒polariton condensates in double tunnel-coupled potential traps inside a high-Q GaAs/AlAs microcavity at 2 K under resonance laser pumping with picosecond pulses at times of up to 1.5 ns. The time of the condensates’ spin relaxation in a double trap is estimated as τs ≈ 10 ns. The effect of tunnel interaction and anisotropy of the trap potential on the energy spectrum of the polariton modes and the polarization dynamics of the spinor condensate in tunnel-coupled potential traps is discussed.