@article{1c288be75e9f4c7b831f5ea4bc206102,
title = "Single-exciton trapping in an electrostatically defined two-dimensional semiconductor quantum dot",
abstract = "Interlayer excitons (IXs) in two-dimensional semiconductors have long lifetimes and spin-valley coupled physics, with a long-standing goal of single-exciton trapping for valleytronic applications. In this work, we use a nanopatterned graphene gate to create an electrostatic IX trap. We measure a unique power-dependent blueshift of IX energy, where narrow linewidth emission exhibits discrete energy jumps. We attribute these jumps to quantized increases of the number occupancy of IXs within the trap and compare to a theoretical model to assign the lowest energy emission line to single-IX recombination.",
author = "Shanks, {Daniel N.} and Fateme Mahdikhanysarvejahany and Koehler, {Michael R.} and Mandrus, {David G.} and Takashi Taniguchi and Kenji Watanabe and Leroy, {Brian J.} and Schaibley, {John R.}",
note = "Funding Information: The authors acknowledge useful conversations with Dr. Rolf Binder. J.R.S. and B.J.L. acknowledge support from the National Science Foundation Grants No. ECCS-2054572 and No. DMR-2003583, and the Army Research Office under Grant No. W911NF-20-1-0215. J.R.S. acknowledges support from Air Force Office Scientific Research Grants No. FA9550-18-1-0390 and No. FA9550-21-1-0219. B.J.L. acknowledges support from the Army Research Office under Grant No. W911NF-18-1-0420 and the National Science Foundation Grant No. ECCS- 2122462. D.G.M. acknowledges support from the Gordon and Betty Moore Foundation{\textquoteright}s EPiQS Initiative, Grant No. GBMF9069. K.W. and T.T. acknowledge support from JSPS KAKENHI (Grants No. 19H05790, No. 20H00354, and No. 21H05233). Plasma etching was performed using a Plasma-Therm reactive ion etcher acquired through an NSF MRI grant, Award No. ECCS-1725571. Publisher Copyright: {\textcopyright} 2022 American Physical Society. ",
year = "2022",
month = nov,
day = "15",
doi = "10.1103/PhysRevB.106.L201401",
language = "English (US)",
volume = "106",
journal = "Physical Review B-Condensed Matter",
issn = "0163-1829",
publisher = "American Physical Society",
number = "20",
}