Sycamore processor

Sycamore is a transmon superconducting quantum processor created by Google's Artificial Intelligence division.

[2] In 2019, Sycamore completed a task in 200 seconds that Google claimed, in a Nature paper, would take a state-of-the-art supercomputer 10,000 years to finish.

[3][4][5][6][7][8] Later, IBM made a counter-argument, claiming that the task would only take 2.5 days on a classical system like Summit.

They showed long-range entanglement properties of the state by measuring non-zero topological entropy, simulating anyon interferometry and their braiding statistics, and preparing a topological quantum error correcting code with one logical qubit.

[17] In July 2021, a collaboration consisting of Google and multiple universities reported the observation of a discrete time crystal on the Sycamore processor.