Quantum computers accessing multiple parallel realities

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A quantum computer could solve the problem of factoring very large numbers. It would take a classical computer, even one as big as the whole universe, billions of years to do. Deutsch says that there's no way to explain how that's possible within the limits of our known universe.

In the final episode of this Tech Tonic series, we hear how radical quantum ideas are reshaping our fundamental understanding of the universe. Nobel Prize winner Anton Zeilinger tells the FT’s Madhumita Murgia about the future of teleportation and the quantum internet; quantum computing pioneer David Deutsch makes the case for the theory that we live in a multiverse; and FT innovation editor John Thornhill speaks to physicist Carlo Rovelli about relational quantum mechanics.

Presented by Madhumita Murgia and John Thornhill, produced by Josh Gabert-Doyon and Edwin Lane. Executive producer is Manuela Saragosa. Sound design by Breen Turner and Samantha Giovinco. Original music by Metaphor Music. The FT’s head of audio is Cheryl Brumley.

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Read a transcript of this episode on FT.com

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