Monolithic superconducting resonators in KTaO3.
Abstract
The objective of this project is to develop a superconducting resonator device that uses a single monolithic material as both the superconductor and the insulator. In the conventional approach to building such devices, these are two distinct materials- a single crystal low loss insulator and a superconducting film patterned by etching. Here, the oxide perovskite KTaO3 will be explored as a candidate material for both device functions. A key promise of this approach is to eliminate disordered structural boundaries between superconductor and insulator regions of the device. The core research questions to be addressed are whether this will reduce or eliminate the associated microwave dielectric dissipation by parasitic two-level systems, and what dissipation mechanisms will become dominant in a monolithic resonator. If successful, this project will enable us to fundamentally re-imagine material selection for cryogenic MHz - GHz range device with low dissipation, with potential major impacts in quantum information technology, quantum sensing, and cryogenic classical logic devices.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Feb 06, 2025
- Source ID
- FA95502410155
Entities
People
- Evgeny Mikheev
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- University of Cincinnati