Research

Our Workflow

To build VT devices requires inducing superconductivity in semiconductors through: 1) direct contact between superconductors and semiconductors; 2) inducting superconductivity via hyper-doping. We are currently exploring both approaches in Ge and InAs quantum wells. Our hybrid superconductor-germanium heterostructures are grown in-house using our MBE system. The micro-/nanofabrication of our hybrid devices is done at the Nanofab Lab at the ORNL-CNMS facilities.
Funding sources: LPS-LQC

Hybrid quantum devices are emerging as promising platforms for realizing versatile and robust hardware for computation, communication, and sensing applications. In LaBEQ, we are working to develop epitaxial heterostructures of complex oxides on Si, GaAs, and sapphire for on-chip hybrid microwave-acoustic and microwave-photonic devices. We work closely with ORNL-CNMS on the epi-growth and characterization of our materials systems using pulsed laser deposition. We also characterize the electrical and dielectric properties of our hybrid heterostrcuters in collaboration with AFRL RITQ.
Funding sources: NSF ExpandQISE-Tr2

Multi-charged ions (MCI) are dominant species in the outer space, typically generated through solar flares. MCI’s can lead to significant damage to electronics aboard spacecrafts. Therefore, it is critical to determine the concentration and distribution of MCIs in the atomsphere surrounding the earth (from LEO and beyond). We are currently working with Sosolik Lab (at Clemso University) to set up a single-event analysis system at the CU-EBIT facilities to test and develop superconducting single-particle detectors specific to MCIs.