Correlation of nanoscale strain distributions with the spectral emission properties from nanoindentation induced quantum emitters in 2D TMD materials.

ORAL

Abstract

The ability to deterministically place solid-state single photon emitters represents a critical capability for scalable quantum computing platforms. 2D systems are one promising material platform for supporting quantum emitters, as localized strain in these systems has been demonstrated to produce single photon emitters. One means of deterministically imposing localized strain is nanoindentation by an atomic force microscopy (AFM) probe into a polymer surface covered by a 2D material. Here, the deformation of the polymer in combination with the adhesion of the 2D layer to the polymer, imparts a localized strain into the surface. While previous studies have shown that indentations in transition metal dichalcogenides (TMD) can create strain centers which act as single photon emission sites, strategies to create reproducible spectral emission properties remains elusive. Currently, little is known about the relationship between localized strain distributions imparted via nanoindentation and the spectral location, linewidth, and lifetime of photoluminescence emission by quantum emitters. We present a survey of nanoindentation parameters into 2D TMDs, specifically WSe2, varying the size, geometry, and indentation force of the AFM probe used for nanoindentation. Modeling the strain imparted into the material, we then correlate nanoscale strain profiles with the photoluminescence properties of the respective single photon emission sources.

*This work was performed at the Center for Integrated Nanotechnologies, an Office of Science User Facility operated for the U.S. Department of Energy (DOE) Office of Science. Los Alamos National Laboratory (LANL), an affirmative action equal opportunity employer, is managed by Triad National Security, LLC for the U.S. Department of Energy's NNSA, under contract 89233218CNA000001. A.C.J. acknowledge support form the DOE, BES, Quantum Information Science Infrastructure Development Project, Deterministic Placement and Integration of Quantum Defects and LDRD Early Career Award 20220531ECR.

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Presenters

  • Andrew Jones

    • Los Alamos National Laboratory
    • Center for Integrated Nanotechnologies, Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA

Authors

  • Andrew Jones

    • Los Alamos National Laboratory
    • Center for Integrated Nanotechnologies, Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA

  • Emma McClure

    • Los Alamos National Laboratory

  • Sean Doan

    • University of California at Irvine
    • Los Alamos National Laboratory

  • Han Htoon

    • Los Alamos Natl Lab
    • Center for Integrated Nanotechnologies, Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
    • Los Alamos National Laboratory

  • Xiangzhi Li

    • Los Alamos National Laboratory