Quantum mechanics

Disk formatting

Operating system

Set (abstract data type)

Biochemistry

Computer science

Code (set theory)

Section (typography)

CLARITY

Physics

Artificial intelligence

Quantum

Chemistry

Programming language

Consistency (knowledge bases)

Nature

This is an updated version of supplementary information to accompany "Quantum supremacy using a programmable superconducting processor", an article published in the October 24, 2019 issue of Nature. The main article is freely available at https://www.nature.com/articles/s41586-019-1666-5. Summary of changes since arXiv:1910.11333v1 (submitted 23 Oct 2019): added URL for qFlex source code; added Erratum section; added Figure S41 comparing statistical and total uncertainty for log and linear XEB; new References [1,65]; miscellaneous updates for clarity and style consistency; miscellaneous typographical and formatting corrections.

Quantum supremacy using a programmable superconducting processor