CQuIC Seminars
Is spacetime a quantum error-correcting code?
Presented by John Preskill, California Institute of Technology
Two of the most amazing ideas in physics are the holographic principle and quantum error correction. The holographic principle asserts that all the information contained in a region of space is encoded on the boundary of the region, albeit in a highly scrambled form. Quantum error correction is the foundation of our hope that large-scale quantum computer can be operated to solve hard problems. I will argue that these two ideas are more closely related than had been previously appreciated. Fernando Pastawski, Beni Yoshida, Daniel Harlow and I have constructed quantum codes that realize the holographic principle, where the bulk information encoded on the boundary is well protected against errors in which portions of the boundary are removed. Our codes provide simplified "toy models" of quantum spacetime, opening new directions in the study of quantum gravity, though many questions remain.
3:30 pm, Thursday, September 3, 2015
PAIS-2540, PAIS
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