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Photoluminescence imaging of single photon emitters within nanoscale strain profiles in monolayer WSe2

Author

Listed:
  • Artem N. Abramov

    (ITMO University)

  • Igor Y. Chestnov

    (ITMO University)

  • Ekaterina S. Alimova

    (Peter The Great St. Petersburg Polytechnic University)

  • Tatiana Ivanova

    (ITMO University)

  • Ivan S. Mukhin

    (ITMO University
    St. Petersburg Academic University)

  • Dmitry N. Krizhanovskii

    (University of Sheffield)

  • Ivan A. Shelykh

    (ITMO University
    University of Iceland
    Abrikosov Center for Theoretical Physics, MIPT
    Russian Quantum Center)

  • Ivan V. Iorsh

    (ITMO University
    Abrikosov Center for Theoretical Physics, MIPT
    Russian Quantum Center)

  • Vasily Kravtsov

    (ITMO University)

Abstract

Local deformation of atomically thin van der Waals materials provides a powerful approach to create site-controlled chip-compatible single-photon emitters (SPEs). However, the microscopic mechanisms underlying the formation of such strain-induced SPEs are still not fully clear, which hinders further efforts in their deterministic integration with nanophotonic structures for developing practical on-chip sources of quantum light. Here we investigate SPEs with single-photon purity up to 98% created in monolayer WSe2 via nanoindentation. Using photoluminescence imaging in combination with atomic force microscopy, we locate single-photon emitting sites on a deep sub-wavelength spatial scale and reconstruct the details of the surrounding local strain potential. The obtained results suggest that the origin of the observed single-photon emission is likely related to strain-induced spectral shift of dark excitonic states and their hybridization with localized states of individual defects.

Suggested Citation

  • Artem N. Abramov & Igor Y. Chestnov & Ekaterina S. Alimova & Tatiana Ivanova & Ivan S. Mukhin & Dmitry N. Krizhanovskii & Ivan A. Shelykh & Ivan V. Iorsh & Vasily Kravtsov, 2023. "Photoluminescence imaging of single photon emitters within nanoscale strain profiles in monolayer WSe2," Nature Communications, Nature, vol. 14(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-41292-9
    DOI: 10.1038/s41467-023-41292-9
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    References listed on IDEAS

    as
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