Theoretical Study of Silicon-Based Quantum Information Processing
Abstract
We propose to study theoretically important current issues in Silicon-based semiconductor quantum computing architectures. Our proposed research program consists of two main directions: coherent manipulation of a single spin qubit, and exchange coupling between spin qubits. Both are crucial in our long term goal of building a high-fidelity large-scale Silicon- and spin-based quantum computer. On the front of single-spin explorations, we would like to study spin coherence and control fidelity in the presence of static magnetic field gradient, and search for optimal conditions for spin control and coherence. On the front of multiple spin qubits, we would like to study the interplay between exchange coupling and valley mixing, and explore whether multi-electron states in a dot/donor(s) can be used to encode a more robust spin qubit. We will also analyze the spectrum and dynamics of multi-donor systems. On the front of noise and decoherence, we would like to study how interface defects could produce charge and magnetic noise. By achieving the goals set forth in this proposal, we could help identify optimal designs for high-fidelity single-qubit and two-qubit gates in a Silicon-spin-based quantum computer.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Sep 11, 2018
- Source ID
- W911NF1710257
Entities
People
- Xuedong Hu
Organizations
- Army Contracting Command
- National Security Agency
- University at Buffalo