A5015281560- Quantum and electron transport phenomena
- Semiconductor materials and devices
- Electronic and Structural Properties of Oxides
- Advancements in Semiconductor Devices and Circuit Design
- Semiconductor Quantum Structures and Devices
- Quantum Computing Algorithms and Architecture
- Atmospheric Ozone and Climate
- Quantum Information and Cryptography
- Model Reduction and Neural Networks
- Diamond and Carbon-based Materials Research
- Spectroscopy and Laser Applications
- Machine Learning in Materials Science
- Quantum-Dot Cellular Automata
- Atomic and Subatomic Physics Research
- Quantum many-body systems
- Atmospheric and Environmental Gas Dynamics
Centre for Quantum Computation and Communication Technology
2024
UNSW Sydney
2024
Spin states in semiconductors provide exceptionally stable and noise-resistant environments for qubits, positioning them as optimal candidates reliable quantum computing technologies. The proposal to use nuclear electronic spins of donor atoms silicon, introduced by Kane 1998, sparked a new research field focused on the precise individual impurity devices, utilising scanning tunnelling microscopy ion implantation. This roadmap article reviews advancements 25 years since Kane's proposal,...
Abstract Spin states in semiconductors provide exceptionally stable and noise-resistant environments for qubits, positioning them as optimal candidates reliable quantum computing technologies. The proposal to use nuclear electronic spins of donor atoms silicon, introduced by Kane 1998, sparked a new research field focused on the precise individual impurity devices, utilising scanning tunnelling microscopy ion implantation. This roadmap article reviews advancements 25 years since Kane’s...
Quantum nondemolition measurements (QNDMs) are a precious resource for quantum computing. They an integral part of the surface code, holy grail error correction, and can boost initialization readout fidelities through repeated measurements. In spin systems, scalable QNDMS achievable by coupling to ancillary spins read via charge reservoirs. Here, authors develop model quantify how small deviations from true QNDMs in real system introduce bit-flip errors analyze they be minimized.
Quantum nondemolition (QND) measurements are a precious resource for quantum information processing. Repetitive QND can boost the fidelity of qubit preparation and measurement, even when underlying single-shot low fidelity. However, this is limited by degree in which physical system allows truly process -- slight deviations from ideal measurement result bit flip errors (`quantum jumps') if repeated too often. Here, we develop theoretical framework to understand quantify resulting error...
Scalable quantum processors require high-fidelity universal logic operations in a manufacturable physical platform. Donors silicon provide atomic size, excellent coherence and compatibility with standard semiconductor processing, but no entanglement between donor-bound electron spins has been demonstrated to date. Here we present the experimental demonstration tomography of 1- 2-qubit gates system two weakly exchange-coupled electrons, bound single phosphorus donors introduced by ion...