Epitaxial Quantum Dot Regulated Self-Assembly for Single-Photon Array Quantum Sources
Abstract
Coherent single photon arrays are of particular interest as a source for quantum computing. Quantum dot (QD) arrays are a good candidate, but requires precise control of QD size and placement. Regulated self-assembly of QDs on top of fabricated nanopillars can control their placement. The array of nanopillars can also be designed to act as a photonic crystal to help couple light into the QDs. By controlling the composition and substrate surface conditions the QD size can also be consistent. Of critical importance is keeping the QD size in the early facet phase, consistently aligning with the crystalline directions, before additional facets appear to lower surface energy by becoming steadily more hemispherical. Therefore, correctly sized, prepatterned nanopillars can be used to seed the epitaxial growth of an array of QDs. In this work, we will create QDs on nanopillars for the SiGe and III�N materials systems and test their functionality as coherent photonic sources.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 06, 2024
- Source ID
- FA95502310432
Entities
People
- Thomas E. Vandervelde
Organizations
- Air Force Office of Scientific Research
- Tufts University
- United States Air Force