Helen Sharman, Britain’s first astronaut, explores quantum computing. What are these machines, how are they created and how can their calculations potentially change the world? Helen is joined by quantum computing experts professor John M. Martinis from University of California, Santa Barbara and Provost of Imperial College London, Professor Ian Walmsley. Zero Pressure is a podcast from Imperial College London and Saab. A relaxed conversation with those on the cutting edge of science and technology - hosted by Britain's first astronaut Helen Sharman - Presented by Imperial College London and Saab. The Zero Pressure podcast series will be looking at how science and technology can positively contribute to solving complex, interrelated global challenges of today and tomorrow. We will be looking at pioneering technologies and speaking those on the thinking edge.