Synthetic 2D Materials for Quantum Light Sources and Memory
Abstract
The combined team of three institutions (University of Pennsylvania, AFRL, and Ulsan National Institute of Science and Technology (UNIST), South Korea) as part of the US/Korea Quantum initiative led by PI Deep Jariwala of Penn in collaboration with Nicholas Glavin (RX) and Joshua Hendrickson (RY) of AFRL demonstrated a bottom-up, scalable, and lithography-free approach for creating large areas of localized quantum emitters with high density (150 emitters/um2) in a two-dimensional (2D) semiconductor tungsten diselenide (WSe2) monolayer. The team induced strain inside the WSe2 monolayer with high spatial density by conformally placing the WSe2 monolayer over a uniform array of Platinum nanoparticles of approx. 10 nm in size. Cryogenic, time-resolved, and gate-tunable luminescence measurements combined with near-field luminescence spectroscopy suggested the formation of localized states in strained regions that emit single photons with a high spatial density. The approach of using a metal nanoparticle array to generate a high density of strained quantum emitters is the first report of scalable (> centimeter square areas), tunable, and versatile quantum light sources. This work was published in ACS Nano, 2022, 16, 6, 96519659 and was widely highlighted by scientific news outlets. During the course of this program, the PIs won numerous prestigious awards.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 27, 2023
- Accession Number
- AD1204656
Entities
People
- Deep Jariwala
Organizations
- University of Pennsylvania