Design and Control of Atomic Defects in Group II-Oxide Materials
Abstract
Solid-state qubits play a crucial role in the development of scalable quantum computers and networks. However, the coherence times of these qubits are limited by their interaction with the nuclear spin environment. Group II-oxides offer a highly promising host for spin qubits because of their exceptionally quiet nuclear environment, which can support long coherence times. Additionally, they possess other desirable properties such as a wide bandgap that is transparent over a broad frequency range. This program aims to develop the next generation of optically active solid-state qubits based on atomic defects in group II-oxides. Our approach will use highthroughput computational search combined with state-of-the-art materials growth, optical spectroscopy, scanning transmission electron microscopy (STEM), and first-principles theoretical and computational modeling, to optimize the spin and optical properties of both the host and defects. High throughput computational search will identify the most promising spin qubit candidates. The theoretical modeling, growth, and characterization teams will work together to achieve desired defects in ultra-pure materials, and study the optical and spin properties. Tight interaction between theory, synthesis, and characterization will establish a clear scientific understanding of the impact of point defects and extended defects (e.g., grain boundaries, dislocations, surfaces, etc.) on optical and spin coherence lifetime. We will use this knowledge to improve the material growth process to achieve better and purer hosts that can support longer spin coherence times and efficient radiative emission. Our program aims to develop not only a promising new material system but also a cohesive approach to materials development. This approach integrates the theory, materials growth, and characterization communities to establish principles and protocols for effective collaboration when studying other materials. By doing so, we can ensure a holistic approach to materials development that considers all aspects of the material s properties and performance, from theoretical predictions to experimental observations.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 07, 2024
- Source ID
- FA95502310667
Entities
People
- Edo Waks
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- University of Maryland