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QLab Cardiff

Compound Semiconductor Quantum Technology

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We have a new article published in the journal Materials for Quantum Technology about one of our favourite topics, Single Quantum Emitters in Gallium Nitride. This is a perspective article reviewing the work in this field over the last 10 years and illustrated with some our labs data in Cardiff, measured on samples from the Cambridge Centre for Gallium Nitride. You can read the article here: I have been at the PHOTON conference this week in Newcastle. Many fascinating talks on Cuprous oxide, silicon carbide, integrated photonics, quantum optics and too many more to mention. We also had great talks from QLab members Davey, Liv, Harry, Sam and JP promoting the group. We are now looking forward to PHOTON2028 in Newcastle again. Katie is in Tokyo at the International Conference on the Physics of Semiconductors presenting her work on quantum emitters in gallium nitride. A great opportunity to catch up on the best research in the field from across the globe. Thanks to the UKNC, school of engineering, Dorothy Johnson Trust, SWIEET and IoP for funding this trip. Group day out on the south Wales coast path. Walked from Rhoose to Barry. This week the group welcomes three new students from the compound semiconductor Center for Doctoral Training. (R-L) Nerys and Harry are working with JP Hadden and Jess is working with me. Congratulations on your excellent choices! Davey Armstrong passed his PhD viva today. Many thanks to Prof James Gates, Steven Lind and Daryl Beggs for conducting the viva. As is now traditional celebrations were held in the Pen and Wig pub. Everyone in the group is super proud of Davey on his well deserved doctorate. Bravo! I was fortunate enough to attend a Rank Prize meeting in Cumbria this week on visible and UV photonics, whilst representing my group's recent work. Great speakers showing interesting results for several days away from the office was good for my brain. Thanks to Profs Martin Dawson, Rachel Oliver and Michael Strain for organising this fascinating event. Congratulations to Bilge on passing his viva yesterday! Bilge's project was on quantum light sources in Aluminium nitride funded by the EU project @lasiondef . He was a wizard in the cleanroom and a jedi master with lumerical, so this PhD was well deserved. Thanks to @haddenjp for co-supervision, and Dr Alex Clark and Francesco Maria for examining. As is now traditional, I made Bilge something to remember his time with us, as he continues to more success at the university of Southampton. We have a new paper out in Optica Quantum. It is the result of a collaboration with the wonderful Thomas Bracht, Moritz Cygorek and Doris Reiter in Dortmund University, aiming to understand the statistics of multiphoton states from quantum dots. Their theory, coupled with our experimental work, has unravelled the physics driving the sequences of photons emitted.

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