Our first guest in this episode of the Physics World Weekly podcast is the physicist Carmen Palacios-Berraquero, who is chief executive of Nu Quantum. The UK-based company spun-out from the from the University of Cambridge in 2018 and Palacios-Berraquero explains how the firm’s single-photon sources and detectors are used in quantum technologies.

Also in this episode are Akihiro Kojima and Mike Lee, who are two of seven winners of the 2022 Rank Prize for Optoelectronics – which has been given “For the discovery and development of all-solid-state perovskite semiconductor solar cells”. Kojima and Lee talk about the potential that perovskites have for creating high-performance solar cells and also chat about where their careers have taken them since they did their award-winning work.