APS Logo

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.

–

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