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Dr J.P. Hadden

Dr J.P. Hadden

Postdoctoral Research Associate, Research
Advanced Materials and Devices - Sêr Cymru Research Group

School of Physics and Astronomy

Room C/3.07, Queen's Buildings - North Building, 5 The Parade, Newport Road, Cardiff, CF24 3AA

J.P. Hadden joined Cardiff University in 2018.  His work focusses on solid state quantum photonic technologies based on single photon emitting colour centres in wide bandgap materials such as Gallium Nitride and 2D materials.

Following completion of a MSci in Mathematics and Physics at the University of Bristol, I joined the Centre for Quantum Photonics with Profs Jeremy O'Brien and John Rarity, completing a PhD on "Photonic Structures and Techniques for Enhanced Measurement of Spin Qubits in Diamond".  Subsequently I became an Eyes High Postdoctoral Fellow in Prof. Paul Barclay's group at the Institute for Quantum Science and Technology at the University of Calgary.  I joined Cardiff University in 2018, working with Dr Anthony Bennett and Prof. Diana Huffaker.









My current research interests are in the investigation and development of single photon emitting colour centres in wide band-gap compound semiconductors with mature growth and processing capabilities such as Gallium Nitride.

My previous work has focussed on the development of colour centres in diamond as photonic quantum technology resources such as single photon quantum emitters and solid state qubits for quantum information.  This involved the coupling of Nitrogen Vacancy (NV) or Silicon Vacancy (SiV) colour centres to photonic structures such as focussed ion beam (FIB) milled solid immersion lenses to improve photon collection efficiency (APL, 97(24), 241901, (2010)), whispering gallery mode microdisk resonators for cavity optomechanics (Optica, 3(9), 963. (2016)), and femtosecond laser written waveguides to guide and collect emitted light (Optics Letters, 43(15), 3586 (2018)).