Quantum yield engineering of quantum emitters in WSe<sub>2</sub> by deterministically coupling to plasmonic nanocavities

ORAL

Abstract

Solid-state single-quantum emitters are important resources for on-chip photonic quantum technologies. Efficient cavity-emitter coupling is required to realize quantum networks application. Recent studies explored the scalability aspect via spatially defined stressors to create quantum emitters from monolayer transition metal dichalcogenide semiconductor. Yet the low quantum yield of those quantum emitters is a crucial challenge to any real applications. Here we pressent a deterministic approach to achieve Purcell-enhancement at lithographically defined locations using the sharp corners of a Au nanocube for both electric field enhancement and to deform a two-dimensional material. This nanoplasmonic platform allows for studying the same quantum emitter before and after coupling. We reached record high quantum yield to near-unity in combination with flux grown high quality material that has naturally low non-radiative defect centers1.

Reference:
1. Luo, Y. et al. Deterministic coupling of site-controlled quantum emitters in monolayer WSe2 to plasmonic nanocavities. Nat. Nanotechnol. (2018). DOI:10.1038/s41565-018-0275-z

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Presenters

  • Yue Luo

    • Stevens Institute of Technology

Authors

  • Yue Luo

    • Stevens Institute of Technology

  • Gabriella D. Shepard

    • Stevens Institute of Technology

  • Jenny V. Ardelean

    • Mechanical Engineering, Columbia University

  • Daniel A Rhodes

    • Columbia University
    • Physics, Columbia University
    • National High Magnetic Field Laboratory, Tallahassee, FL-32310, USA.
    • Columbia Nano Initiative, Columbia University
    • Department of Mechanical Engineering, Columbia University, New York, NY 10027 USA
    • Mechanical Engineering, Columbia University
    • Columbia Univ

  • Bumho Kim

    • Department of Mechanical Engineering, Columbia University
    • Mechanical Engineering, Columbia University

  • Katayun Barmak

    • Mechanical Engineering, Columbia University

  • James Hone

    • Columbia University
    • Mechanics, Columbia University
    • Department of Mechanical Engineering, Columbia University in the City of New York
    • Department of Mechanical Engineering, Columbia University
    • Department of Mechanical Engineering, Columbia University, New York, NY 10027 USA
    • Mechanical Engineering, Columbia University

  • Stefan Strauf

    • Physics, Stevens Institute of Technology
    • Stevens Institute of Technology