Developing and controlling single-photon emitters by tip-enhanced photoluminescence nanospectroscopy and nano-localized force control

ORAL

Abstract

Strain-induced single-photon emitters in two-dimensional (2D) materials associated with deterministically located quantum wells could pave the way for quantum state transfer in solid state qubits. However, far-field optical techniques can neither spatially resolve these highly localized emitters nor allow for deterministic control of the light-matter interaction. Here, we develop plasmonic tip-induced, nano-localized force control to generate, tune, and control nano-localized quantum states in monolayer WSe2 by tuning the strain gradients and the plastic deformation depth with sub-nanometer precision. We investigate exciton funnelling behavior and strain-induced bandgap modification from spectral peak shift and intensity of the indented nanostructures, which could possibly help to reveal the deterministic formation of single-photon quantum emitter. In addition, we provide a perspective on this tip-based nanocavity approach, which has been used to probe in photoluminescence bright and dark exciton emissions, localized states, and interlayer excitons in 2D heterostructures.

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Presenters

  • Jun Yan

    • Department of Physics, Department of Chemistry, and JILA, University of Colorado - Boulder
    • Physics, University of Colorado, Boulder

Authors

  • Jun Yan

    • Department of Physics, Department of Chemistry, and JILA, University of Colorado - Boulder
    • Physics, University of Colorado, Boulder

  • Chuanlin Li

    • Department of Physics, Department of Chemistry, and JILA, University of Colorado - Boulder

  • Molly A. May

    • University of Colorado, Boulder
    • Department of Physics, Department of Chemistry, and JILA, University of Colorado - Boulder

  • Tao Jiang

    • University of Colorado, Boulder
    • Department of Physics, Department of Chemistry, and JILA, University of Colorado - Boulder
    • Physics, University of Colorado, Boulder

  • Markus B. Raschke

    • University of Colorado, Boulder
    • Physics and Chemistry, University of Colorado, Boulder
    • University of Colorado Boulder
    • Department of Physics, Department of Chemistry, and JILA, University of Colorado - Boulder
    • Department of Physics, Department of Chemistry and JILA, University of Colorado, Boulder
    • Department of Physics, Department of Chemistry, and JILA, University of Colorado, Boulder
    • Physics, University of Colorado, Boulder
    • Physics, Chemistry, and JILA, University of Colorado, Boulder