Early computing research explored a range of possible platforms before silicon emerged as dominant. Quantum computing is still at an early stage, and the range of possible platforms is diverse, with important contenders being superconducting circuits, trapped ions, defect centres in diamond, donor spins in silicon and pure photonics. Join Josh Nunn, from the University of Bath, who will review the merits and challenges of these approaches. He will also describe the recent trend towards hybrid “modular” architectures, and describe the need for coherent storage to synchronise optical entanglement swapping. His own work focusses on broadband light storage and Josh will describe how these devices could solve the scaling challenges for all-photonic quantum computing.
After obtaining his PhD in 2009, Josh stayed on at the University of Oxford’s Clarendon Laboratory as a departmental lecturer and then as a Royal Society University Research Fellow working on light-matter interactions. In 2017 he was appointed Reader in Photonics at the Centre for Photonics and Photonic Materials at the University of Bath where he is developing protocols for light storage based on Kerr interactions in warm vapours and Brillouin scattering in diamond. He currently leads the Photonics Workpackage for the EPSRC Networked Quantum Information Technologies Hub and is a co-founder of Veriqloud, a start-up developing quantum network applications.