Dynamic Tuning of Single-Photon Emission in Monolayer WSe<sub>2</sub> via Localized Strain Engineering
Two-dimensional (2D) materials have emerged as promising candidates for next-generation integrated single-photon emitters (SPEs). However, significant variability in the emission energies presents a major challenge in producing identical single photons from different 2D SPEs, which may become crucial for practical quantum applications. Although various approaches to dynamically tuning the emission energies of 2D SPEs have been developed to address the issue, the practical solution to matching multiple individual 2D SPEs is still scarce. In this work, we demonstrate precise emission energy tuning of individual SPEs in a WSe<sub>2</sub> monolayer. Our approach utilizes localized strain fields near individual SPEs, which we control by adjusting the volume of a stressor layer through laser annealing. This technique allows continuous emission energy tuning of up to 15 meV while maintaining the qualities of SPEs. Additionally, we showcase the precise spectral alignment of three distinct SPEs in a single WSe<sub>2</sub> monolayer to the same wavelength.
Authors
- Seok Woo Lee (ORCID: https://orcid.org/0000-0003-2459-7174)
- Kunze Lu (ORCID: https://orcid.org/0000-0003-1132-1822)
- In Cheol Seo (ORCID: https://orcid.org/0000-0001-8732-3352)
- Yi Yu (ORCID: https://orcid.org/0000-0001-5212-3270)
- John J. H. Eng
- Weibo Gao (ORCID: https://orcid.org/0000-0003-3971-621X)
- Junyu Ge
- Manlin Luo (ORCID: https://orcid.org/0000-0003-1045-8093)
- Donguk Nam (ORCID: https://orcid.org/0000-0003-4378-205X)
- Tian‐Ran Wei (ORCID: https://orcid.org/0000-0002-5011-0932)
- Youngmin Kim (ORCID: https://orcid.org/0000-0001-7248-2078)
- Hong Li (ORCID: https://orcid.org/0000-0002-6975-7787)
Institutions
- Kookmin University (KR)
- Agency for Science, Technology and Research (SG)
- Korea Advanced Institute of Science and Technology (KR)
- Nanyang Technological University (SG)
- Shanghai Jiao Tong University (CN)
- Thales (Australia) (AU)
- Metal Matrix Cast Composites (United States) (US)
- Star Technology and Research (United States) (US)
- Institute of Materials Research and Engineering (SG)
- National Metrology Centre (SG)
Publication Details
- Journal
- Nano Letters
- Published
- 2025-02-18
- DOI
- https://doi.org/10.1021/acs.nanolett.4c05450
- Citations
- 11
- Primary Topic
- Advanced Fiber Laser Technologies
- Type
- article
- Field-Weighted Citation Impact
- 13.71
Funders
- Agency for Science, Technology and Research
- National Research Foundation Singapore
- Ministry of Education - Singapore