Any examination of the physical world reveals the domain of quantum mechanics. Here the certainties of the “classical” world are unmasked as mere approximations: the position of an atom, the colour of a ray of light, and even whether a cat is alive, or dead all melt into shades of probability and randomness.

In this talk Dr Alex Davis introduces the quantum theory of light and summarises the century of scientific progress underlying modern research. Explaining how quantum optics promises powerful new technologies, and how researchers at Bath and elsewhere plan to deliver them.

Dr Alex Davis, University of Bath