The theory & blueprint of quantum supremacy in near-term devices is proposed
Google publishes a paper that outlines theory performing a beyond classical computation by sampling random circuits. Original theory is developed into an experimental blueprint using 9 qubits.
Google open sources Cirq
Google releases Cirq, a python library for writing, manipulating, and running quantum circuits on quantum computers and simulators, in order to improve the productivity of NISQ algorithm developers and researchers.
Google demonstrates beyond-classical computation with a quantum processor
The Sycamore processor performs a target computation in 200 seconds that would be impractical with algorithms and supercomputers available at the time (blog).