QUDOS 7th Plenary Meeting

Researchers from the QUDOS consortium hold regular meetings to share the latest developments of their collaborative research work among themselves and with the QUDOS External Advisory Board.  On 1 July 2025, some 30 researchers from the University of Cambridge, Cardiff University, University of Southampton and UCL gathered at Southampton for the 7^th QUDOS plenary meeting. 

Members of the QUDOS External Advisory Board, which comprises distinguished individuals from industry, academia and UKRI-EPSRC, also joined the plenary meeting.

As QUDOS entered the final two years of the programme, Alwyn Seeds of UCL, Principal Investigator of QUDOS, started the meeting by highlighting the milestones achieved over the past 4.5 years and the workplan for the final two years in achieving the monolithic integration of all required optical functions on silicon. 

Researchers from the four universities of the QUDOS consortium then gave talks on the development of their specific projects. 

Chong Chen and Jae-Seong Park of UCL first talked about quantum dot growth and quantum dot lasers integrated on silicon under Project 1 of QUDOS.

Michele Paparella, Lifeng Bao and Ilias Skandalos of the University of Southampton talked about optimisation of p-and n-metal contacts and monolithic integration of III/V lasers on silicon substrates under Project 2 of QUDOS.

Peter Smowton and Pawan Mishra of Cardiff University then talked about the updates of the integration work and the progress on quantum dot intermixing under Project 3 of QUDOS. 

Finally, Liv Hawkins of UCL, Rui Ma of the University of Cambridge, and Dun Qiao of Cardiff University gave talks on III-V quantum dot modulators, SiN photonic circuits and progress of monolithically integrated widely tuneable lasers under Project 4 of QUDOS.

Throughout the plenary meeting, researchers from the four universities and members of the External Advisory Board engaged in lively discussions, which have enlightened the consortium’s pursuit of QUDOS’ goal of comprehensive optical integration on silicon.