Experimental Quantum Optics
and Photonics Group


Latest News

Benchmarking the algorithmic performance of near-term neutral atom processors
We have performed theoretical work on algorithmic benchmarking to evaluate the performance of near-term neutral atom processors accounting for realistic gate errors and atom loss. We show that for a 9 qubit system a quantum volume of 29 is attainable, the maximum possible for this size of processor, highlighting the viability of using near-term neutral atom hardware for small-scale algorithms. For more details see arXiv:2402.02127.
Commensurate and incommensurate 1D interacting quantum systems
We use dynamically varying microscopic light potentials in a quantum-gas microscope to study commensurate and incommensurate 1D systems of interacting bosonic atoms in an optical lattice Nat Communications 15, 474 (2024).
Interspecies Förster resonances of Rb-Cs Rydberg d-states for enhanced multi-qubit gate fidelities
We present an analysis of interspecies interactions between Rydberg d-states of rubidium and cesium. We identify the Förster resonance channels offering the strongest interspecies couplings, demonstrating the viability for performing high-fidelity two- and multi-qubit CkZ gates up to k=4, including accounting for blockade errors evaluated via numerical diagonalization of the pair-potentials. Our results show d-state orbitals offer enhanced suppression of intraspecies couplings compared to s-states, making them well suited for use in large-scale neutral atom quantum processors. For more details see arXiv:2401.02308.
Dr. Jonathan Pritchard awarded RAEng Senior Research Fellowship

Congratulations to Dr Jonathan Pritchard on receiving a prestigious RAEng Senior Research Fellowship with M Squared Lasers to develop fault-tolerant neutral atom quantum computers. For more information see the project page QuERy.

Recent publications

Benchmarking the algorithmic performance of near-term neutral atom processors
(2024)
Neutral atom quantum processors provide a viable route to scalable quantum computing, with recent demonstrations of high-fidelity and …
Demonstration of quantum-enhanced rangefinding robust against classical jamming
Optics Express 32, 2916 (2024)
We demonstrate a quantum-enhanced lidar capable of performing confident target detection and rangefinding in the presence of strong, …
Interspecies Förster resonances of Rb-Cs Rydberg $d$-states for enhanced multi-qubit gate fidelities
(2024)
We present an analysis of interspecies interactions between Rydberg $d$-states of rubidium and cesium. We identify the Förster …
Commensurate and incommensurate 1D interacting quantum systems
Nature Communications 15, 474 (2024)
Abstract Single-atom imaging resolution of many-body quantum systems in optical lattices is routinely achieved with quantum-gas …
A comparative study of deconvolution techniques for quantum-gas microscope images
New Journal of Physics (2023)
Abstract Quantum-gas microscopes are used to study ultracold atoms in optical lattices at the single-particle level. In these system …