Unless you’re a physicist, you might find this podcast a little difficult to understand in places. But that’s not to say it’s not fascinating stuff! Lucy speaks to Professor Kai Bongs, Professor of Cold Atom Physics at the University of Birmingham's School of Physics and Astronomy, and the local head of the Midlands Ultracold Atom Research Centre. Kai talks about cold atoms, quantum computing and how atomic clocks on GPS satellites help the sat-navs in our cars. I bet you didn't know that, did you?