Clark Group
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Dr Alex Clark
Royal Society University Research Fellow and Senior Lecturer
Research interests and activities
Dr Alex S. Clark is a Royal Society University Research Fellow and proleptic Senior Lecturer working on Hybrid Quantum Network Technologies. Current projects include:
- Molecular single photon sources
- Quantum emitters in solid state systems
- Atomic quantum memories
- Nonlinear optical frequency conversion
- Quantum imaging and spectroscopy
Major research topics
- Nonlinear Photonics
- Quantum Memories
- Single Photon Sources
- Single Molecules
- Atomic Physics
- Quantum Imaging
(pictured above: Nanocrystals containing organic molecules are capable of generating indistinguishable single photons on demand, which are useful for myriad quantum technologies)
Current postdocs and research fellows
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Dr Rowan Hoggarth
Senior Research Associate
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Dr Frederic Leroux
Research Associate (also with Weidner group)
Current PhD students
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Paul Burdekin
(Based at Imperial)
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Emma Pearce
(Based at Imperial)
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Dominika Bogusz
(Based at Imperial)
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John Yang
(Based at Imperial)
- Tasos Fasoulakis
- Mike Neville
- Jingrui Zhang
- Eesa Ali
Active grants
- 2021-24: QCS Hub Partnership Resource Fund, Atomic frequency conversion of on-demand photons
- 2017-present: Royal Society University Research Fellowship, Molecular Quantum Photonics
- 2017-22: EPSRC, QSUM
Previous grants
- 2018-2022: QuantERA European Consortium, ORQUID: Organic Quantum Integrated Devices
- 2017-2021: EPSRC Standard Grant, Molecular Microcavity Photon Source
- 2015-2017: Marie Sklodowska Curie Fellowship, Quantum Molecular Photon Source (QMoPS)
Recent publications
- R. C. Schofield, C. Clear, R. A. Hoggarth, K. D. Major, D. P. S. McCutcheon, and A. S. Clark, “Photon indistinguishability measurements under pulsed and continuous excitation,” Phys. Rev. Research 4, 013037 (2022)
- R. C. Schofield, P. Burdekin, A. Fasoulakis, L Devanz, D. P. Bogusz, R. A. Hoggarth, K. D. Major, and A. S. Clark, “Narrow and stable single photon emission from dibenzoterrylene in para-terphenyl nanocrystals,” ChemPhysChem (2021)
- C. Toninelli, I. Gerhardt, A. S. Clark, A. Reserbat-Plantey, S. Götzinger, Z. Ristanović, M. Colautti, P. Lombardi, K. D. Major, I. DeperasiÅ„ska, W. H. Pernice, F. H. L. Koppens, B. Kozankiewicz, A. Gourdon, V. Sandoghdar, and M. Orrit, “Single organic molecules for photonic quantum technologies,” Nature Materials 20, 1615-1628 (2021)
- S. Boissier, R. C. Schofield, L. Jin, A. Ovvyan, S. Nur, F. H. L. Koppens, C. Toninelli, W. H. P. Pernice, K. D. Major, E. A. Hinds, and A. S. Clark, “Coherent characterisation of a single molecule in a photonic black box,” Nature Communications 12, 706 (2021)
- P. Burdekin, S. Grandi, R. Newbold, R. A. Hoggarth, K. D. Major, and A. S. Clark, “Single-photon-level sub-Doppler pump-probe spectroscopy of rubidium,” Phys. Rev. Applied 14, 044046 (2020)
- E. Pearce, C. C. Phillips, R. F. Oulton, and A. S. Clark, “Heralded spectroscopy with a fiber photon-pair source,” Appl. Phys. Lett. 117, 054002, Editor’s Highlight (2020)
- R. C. Schofield, D. P. Bogusz, R. A. Hoggarth, S. Nur, K. D. Major, and A. S. Clark, “Polymer-encapsulated organic nanocrystals for single photon emission,” Opt. Mat. Express 10, 1586-1596 (2020)
- C. Clear, R. C. Schofield, K. D. Major, J. Iles-Smith, A. S. Clark, and D. P. S. McCutcheon, “Phonon-induced optical dephasing in single organic molecules,” Phys. Rev. Lett. 124, 153602 (2020)