Sycamore is the name of Google's quantum processor comprising 54 qubits. 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. Thus, Google claimed to have achieved quantum supremacy. To estimate the time that would be taken by a classical supercomputer, Google ran portions of the quantum circuit simulation on the Summit (supercomputer), which is the most powerful classical computer in the world. Later, IBM would make a counter argument, claiming that the task would only take 2.5 days on a classical system like Summit.
- Arute, Frank; Arya, Kunal; Babbush, Ryan; Bacon, Dave; Bardin, Joseph C.; Barends, Rami; Biswas, Rupak; Boixo, Sergio; Brandao, Fernando G. S. L.; Buell, David A.; Burkett, Brian (October 2019). "Quantum supremacy using a programmable superconducting processor". Nature. 574 (7779): 505–510. doi:10.1038/s41586-019-1666-5. ISSN 1476-4687.
- "Google claims 'quantum supremacy' for computer". BBC News. 23 October 2019. Retrieved 23 October 2019.
- "Hello quantum world! Google publishes landmark quantum supremacy claim". Nature. 23 October 2019. Retrieved 23 October 2019.
- "Google Claims Breakthrough in Blazingly Fast Computing". The New York Times. 2019-10-23. ISSN 0362-4331. Retrieved 2019-11-03.
- "On "Quantum Supremacy"". IBM Research Blog. 2019-10-22. Retrieved 2019-10-28.