John Preskill

Contributing Columnist

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Why I Called It ‘Quantum Supremacy’

October 2, 2019

Researchers finally seem to have a quantum computer that can outperform a classical computer. But what does that really mean?

About the author

John Preskill is the Richard P. Feynman professor of theoretical physics at the California Institute of Technology and director of its Institute for Quantum Information and Matter. He began his career in particle physics and cosmology, but now his main research area is quantum information science. He’s interested in how to build and use quantum computers, and in how our deepening understanding of quantum information can illuminate issues in fundamental physics. You can follow him on Twitter @preskill.