7 papers
Whole-device entanglement in a 65-qubit superconducting quantum computer
Gary J. Mooney, Gregory A. L. White, Charles D. Hill +1
The ability to generate large-scale entanglement is an important progenitor of quantum information processing capability in noisy intermediate-scale quantum (NISQ) devices. In this…
Hyperpolarisation of external nuclear spins using nitrogen-vacancy centre ensembles
A. J. Healey, L. T. Hall, G. A. L. White +5
The nitrogen-vacancy (NV) centre in diamond has emerged as a candidate to non-invasively hyperpolarise nuclear spins in molecular systems to improve the sensitivity of nuclear magn…
Generation and verification of 27-qubit Greenberger-Horne-Zeilinger states in a superconducting quantum computer
Gary J. Mooney, Gregory A. L. White, Charles D. Hill +1
Generating and detecting genuine multipartite entanglement (GME) of sizeable quantum states prepared on physical devices is an important benchmark for highlighting the progress of…
Prospects for nuclear spin hyperpolarisation of molecular samples using nitrogen-vacancy centres in diamond
J. -P. Tetienne, L. T. Hall, A. J. Healey +4
After initial proof-of-principle demonstrations, optically pumped nitrogen-vacancy (NV) centres in diamond have been proposed as a non-invasive platform to achieve hyperpolarisatio…
Demonstration of non-Markovian process characterisation and control on a quantum processor
Gregory A. L. White, Charles D. Hill, Felix A. Pollock +2
In the scale-up of quantum computers, the framework underpinning fault-tolerance generally relies on the strong assumption that environmental noise affecting qubit logic is uncorre…
Performance optimization for drift-robust fidelity improvement of two-qubit gates
Gregory A. L. White, Charles D. Hill, Lloyd C. L. Hollenberg
Quantum system characterization techniques represent the front line in the identification and mitigation of noise in quantum computing, but can be expensive in terms of quantum res…