3 papers
quant-ph2026
Pulse-optimised circuit elements for scalable and noise-resilient quantum chemistry
Henrik Gothen, Christopher K. Long, Djamila Hiller +4
Useful chemistry calculations on near-term quantum processors are hindered by current algorithmic runtimes. We develop a methodology to significantly reduce these runtimes. Typical…
quant-ph2025
From virtual Z gates to virtual Z pulses
Christopher K. Long, Crispin H. W. Barnes
Virtual gates have become integral for implementing fast, high-fidelity single-qubit operations. However, virtual gates require that the system's two-qubit gates are microw…
quant-ph2024
Quantifying the advantages of applying quantum approximate algorithms to portfolio optimisation
Haomu Yuan, Christopher K. Long, Hugo V. Lepage +1
We present a quantum algorithm for portfolio optimisation. Specifically, We present an end-to-end quantum approximate optimisation algorithm (QAOA) to solve the discrete global min…