Experimental Quantum Optics
and Photonics Group


Welcome to the University of Strathclyde’s Experimental Quantum Optics and Photonics Group. We are part of the Optics Division in the Department of Physics. Please contact us if you are interested in working in our research areas. See also the International Graduate School for Quantum Technologies, and available PhD opportunities.

Latest News

Demonstration of weighted graph optimization on a Rydberg atom array using local light-shifts
Neutral atom arrays have emerged as a versatile platform towards scalable quantum computation and optimisation. In this paper we present first demonstrations of weighted graph optimization on a Rydberg atom array using annealing with local light-shifts. We verify the ability to prepare weighted graphs in 1D and 2D arrays, including embedding a five vertex non-unit disk graph using nine physical qubits. We find common annealing ramps leading to preparation of the target ground state robustly over a substantial range of different graph weightings. This work provides a route to exploring large-scale optimisation of non-planar weighted graphs relevant for solving relevant real-world problems. For more details see arXiv:2404.02658.
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.
Demonstration of quantum-enhanced rangefinding robust against classical jamming
Our results demonstrating a correlated pair-source to perform target detection and range-finding to show the resilience of quantum-enhanced lidar to classical jamming have been published in Optics Express.
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).

Recent publications

A cold-atom Ramsey clock with a low volume physics package
Scientific Reports 14, (2024)
We demonstrate a Ramsey-type microwave clock interrogating the 6.835 GHz ground-state transition in cold 87Rb atoms loaded from a …
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 …
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 …
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, …