Imperial College London


Faculty of Natural SciencesDepartment of Physics

Imperial College Research Fellow







204Royal College of ScienceSouth Kensington Campus





Dr Sarah Thomas is an Imperial College Research Fellow in quantum optics, working in the Photonic Quantum Information group led by Professor Ian Walmsley ( 

Sarah obtained her PhD as part of Imperial's Doctoral Training Centre in Controlled Quantum Dynamics. She conducted her research in the Ultrafast Quantum Optics group at the University of Oxford with Dr Joshua Nunn and Professor Ian Walmsley. Her research focused on optical quantum memories in warm atomic ensembles, which are key devices for the scalability of optical quantum technologies. 

Sarah was a postdoctoral researcher with Professor Pascale Senellart at the Centre for Nanoscience and Nanotechnology in Paris for 2.5 years, working on quantum dot based single-photon sources and their applications in photonic quantum technologies. 

Sarah re-joined Imperial in 2022, and is now working on optimising quantum memories and interfacing them with quantum dot single-photon sources. 

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Coste N, Gundin M, Fioretto DA, et al., 2023, Probing the dynamics and coherence of a semiconductor hole spin via acoustic phonon-assisted excitation, Quantum Science and Technology, Vol:8

Thomas SE, Sagona-Stophel S, Schofield Z, et al., 2023, Single-Photon-Compatible Telecommunications-Band Quantum Memory in a Hot Atomic Gas, Physical Review Applied, Vol:19

Pont M, Albiero R, Thomas SE, et al., 2022, Quantifying n-Photon Indistinguishability with a Cyclic Integrated Interferometer, Physical Review X, Vol:12, ISSN:2160-3308

Thomas SE, Billard M, Coste N, et al., 2021, Bright Polarized Single-Photon Source Based on a Linear Dipole, Physical Review Letters, Vol:126, ISSN:0031-9007

Ollivier H, Thomas SE, Wein SC, et al., 2021, Hong-Ou-Mandel Interference with Imperfect Single Photon Sources, Physical Review Letters, Vol:126, ISSN:0031-9007

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