I follow the developments in quantum computing from various sources. My starting point is always the same: John Preskill’s Twitter feed.
The term “quantum supremacy” was first used by John Preskill. He explained his reasoning and concerns in a Quanta Magazine article titled “Why I Called It Quantum Supremacy“.
On October 23, 2019 the Google team headed by John Martinis (Chief Scientist Quantum Hardware) and Sergio Boixo (Chief Scientist Quantum Computing Theory), published a paper in Nature claiming that they achieved quantum supremacy in a specific task. Their announcement can be found in this URL
https://ai.googleblog.com/2019/10/quantum-supremacy-using-programmable.html
The scientific paper is open to public at the Nature site (click on the “Download PDF” button): https://www.nature.com/articles/s41586-019-1666-5
For a technical discussion of this quantum supremacy experiment I refer you to Scott Aaronson’s blog post: https://www.scottaaronson.com/blog/?p=4372
IBM response to Google’s claim of quantum supremacy can be found here and here.
New York Times article on the quantum supremacy announcement can be found here.
Suresh Emre
Renaissance Universal 