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Defect and strain engineering of monolayer WSe2 enables site-controlled single-photon emission up to 150 K

Author

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  • Kamyar Parto

    (University of California)

  • Shaimaa I. Azzam

    (University of California
    University of California Santa Barbara)

  • Kaustav Banerjee

    (University of California
    University of California Santa Barbara)

  • Galan Moody

    (University of California
    University of California Santa Barbara)

Abstract

In recent years, quantum-dot-like single-photon emitters in atomically thin van der Waals materials have become a promising platform for future on-chip scalable quantum light sources with unique advantages over existing technologies, notably the potential for site-specific engineering. However, the required cryogenic temperatures for the functionality of these sources has been an inhibitor of their full potential. Existing methods to create emitters in 2D materials face fundamental challenges in extending the working temperature while maintaining the emitter’s fabrication yield and purity. In this work, we demonstrate a method of creating site-controlled single-photon emitters in atomically thin WSe2 with high yield utilizing independent and simultaneous strain engineering via nanoscale stressors and defect engineering via electron-beam irradiation. Many of the emitters exhibit biexciton cascaded emission, single-photon purities above 95%, and working temperatures up to 150 K. This methodology, coupled with possible plasmonic or optical micro-cavity integration, furthers the realization of scalable, room-temperature, and high-quality 2D single- and entangled-photon sources.

Suggested Citation

  • Kamyar Parto & Shaimaa I. Azzam & Kaustav Banerjee & Galan Moody, 2021. "Defect and strain engineering of monolayer WSe2 enables site-controlled single-photon emission up to 150 K," Nature Communications, Nature, vol. 12(1), pages 1-8, December.
  • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-23709-5
    DOI: 10.1038/s41467-021-23709-5
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    Cited by:

    1. Luca Sortino & Panaiot G. Zotev & Catherine L. Phillips & Alistair J. Brash & Javier Cambiasso & Elena Marensi & A. Mark Fox & Stefan A. Maier & Riccardo Sapienza & Alexander I. Tartakovskii, 2021. "Bright single photon emitters with enhanced quantum efficiency in a two-dimensional semiconductor coupled with dielectric nano-antennas," Nature Communications, Nature, vol. 12(1), pages 1-9, December.
    2. N. Fang & Y. R. Chang & S. Fujii & D. Yamashita & M. Maruyama & Y. Gao & C. F. Fong & D. Kozawa & K. Otsuka & K. Nagashio & S. Okada & Y. K. Kato, 2024. "Room-temperature quantum emission from interface excitons in mixed-dimensional heterostructures," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    3. 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.
    4. Hongbing Cai & Abdullah Rasmita & Qinghai Tan & Jia-Min Lai & Ruihua He & Xiangbin Cai & Yan Zhao & Disheng Chen & Naizhou Wang & Zhao Mu & Zumeng Huang & Zhaowei Zhang & John J. H. Eng & Yuanda Liu &, 2023. "Interlayer donor-acceptor pair excitons in MoSe2/WSe2 moiré heterobilayer," Nature Communications, Nature, vol. 14(1), pages 1-7, December.
    5. Pablo Hernández López & Sebastian Heeg & Christoph Schattauer & Sviatoslav Kovalchuk & Abhijeet Kumar & Douglas J. Bock & Jan N. Kirchhof & Bianca Höfer & Kyrylo Greben & Denis Yagodkin & Lukas Linhar, 2022. "Strain control of hybridization between dark and localized excitons in a 2D semiconductor," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    6. M. Iqbal Bakti Utama & Hongfei Zeng & Tumpa Sadhukhan & Anushka Dasgupta & S. Carin Gavin & Riddhi Ananth & Dmitry Lebedev & Wei Wang & Jia-Shiang Chen & Kenji Watanabe & Takashi Taniguchi & Tobin J. , 2023. "Chemomechanical modification of quantum emission in monolayer WSe2," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    7. Longlong Yang & Yu Yuan & Bowen Fu & Jingnan Yang & Danjie Dai & Shushu Shi & Sai Yan & Rui Zhu & Xu Han & Hancong Li & Zhanchun Zuo & Can Wang & Yuan Huang & Kuijuan Jin & Qihuang Gong & Xiulai Xu, 2023. "Revealing broken valley symmetry of quantum emitters in WSe2 with chiral nanocavities," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    8. Huan Zhao & Michael T. Pettes & Yu Zheng & Han Htoon, 2021. "Site-controlled telecom-wavelength single-photon emitters in atomically-thin MoTe2," Nature Communications, Nature, vol. 12(1), pages 1-7, December.

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