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Vlatko Vedral describes himself as a quantum information practitioner, who believes that our universe is made up of quantum bits of information.

It is information, he tells Professor Jim Al-Khalili, rather than energy or matter, the traditional building blocks of classical Newtonian physics, that can help us to understand the nature of reality.

Vlatko is Professor of Quantum Information Science at the University of Oxford and the Principal Investigator at the Centre for Quantum Technologies at the National University of Singapore and he talks to Jim in front of an audience at the Cheltenham Science Festival.

At high school in Belgrade, in what was then Yugoslavia, young Vlatko was bowled over by the idea that you could take the micro-laws of quantum mechanics, and apply them to the complex systems of the macro world.

This drive to see the big picture, was fuelled when, as an undergraduate at Imperial College, London, he saw three words 鈥� 鈥淚nformation is physical鈥� 鈥� the title of a paper by the IBM physicist, Rolf Landauer.

It was a light-bulb moment for Vlatko, who realised that the kind of information processing that the universe is capable of, depends on the underlying laws of physics.

This revelation led to Vlatko鈥檚 incarnation as a self-confessed 鈥減hysics fundamentalist鈥� who unashamedly crowns physics the Queen and other disciplines, her servants. It is physics alone, he tells Jim, which can answer the fundamental questions of the universe and discover the ultimate reality.

His PhD in 1997 at Imperial College, London, applied quantum mechanics, including super-positioning and entanglement (which Einstein famously called 鈥渟pooky action at a distance鈥�), to Claude Shannon鈥檚 Information theory, making Vlatko one of the pioneers in the field of quantum information.

As new quantum computers come on stream, he tells Jim, quantum information practitioners, like him, will have the capacity to simulate complex systems in the macroscopic domain.

Producer: Fiona Hill

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