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Cooperative excitonic quantum ensemble in perovskite-assembly superlattice microcavities

Author

Listed:
  • Chun Zhou

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Yichi Zhong

    (East China Normal University)

  • Hongxing Dong

    (Chinese Academy of Sciences
    UCAS)

  • Weihao Zheng

    (College of Materials Science and Engineering, Hunan University)

  • Jiqing Tan

    (East China Normal University)

  • Qi Jie

    (East China Normal University)

  • Anlian Pan

    (College of Materials Science and Engineering, Hunan University)

  • Long Zhang

    (Chinese Academy of Sciences
    UCAS)

  • Wei Xie

    (East China Normal University)

Abstract

Perovskites—compounds with the CaTiO3-type crystal structure—show outstanding performance in photovoltaics and multiparameter optical emitters due to their large oscillator strength, strong solar absorption, and excellent charge-transport properties. However, the ability to realize and control many-body quantum states in perovskites, which would extend their application from classical optoelectronic materials to ultrafast quantum operation, remains an open research topic. Here, we generate a cooperative quantum state of excitons in a quantum dot ensemble based on a lead halide perovskite, and we control the ultrafast radiation of excitonic quantum ensembles by introducing optical microcavites. The stimulated radiation of excitonic quantum ensemble in a superlattice microcavity is demonstrated to not be limited by the classical population-inversion condition, leading to a picosecond radiative duration time to dissipate all of the in-phase dipoles. Such a perovskite-assembly superlattice microcavity with a tunable radiation rate promises potential applications in ultrafast, photoelectric-compatible quantum processors.

Suggested Citation

  • Chun Zhou & Yichi Zhong & Hongxing Dong & Weihao Zheng & Jiqing Tan & Qi Jie & Anlian Pan & Long Zhang & Wei Xie, 2020. "Cooperative excitonic quantum ensemble in perovskite-assembly superlattice microcavities," Nature Communications, Nature, vol. 11(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-019-14078-1
    DOI: 10.1038/s41467-019-14078-1
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