Microwave - Optical Transduction: a Practical Electro-Optic Implementation

Future quantum technologies will require quantum communication links. Superconducting, semiconducting and spin qubits have characteristic frequencies in the microwave range, while nitrogen-vacancies in diamond, telecoms infrastructure and some semiconductor quantum dots have transitions at optical or near-infrared wavelengths. This project aims to provide a link between these two regimes. Resonant structures fabricated from non-linear electro-optic materials will be used to develop an efficient transduction platform to convert quantum signals between frequencies. This will allow quantum devices operating in a cryogenic environment to communicate over long distances using telecoms techniques. This work is a collaboration with researchers from Singapore and the USA, and is being led by Dr Nicholas Lambert, with support from Associate Professor Harald Schwefel, Dr Florian Sedlmeir and Dr Mallika Suresh.