I published the 2025 edition of the ebook “Understanding Quantum Technologies” on September 29th, 2025. Since then, I regularly updated it with news, mostly related to new arXiv preprints. The update log is at the end of the book. Like with each past editions since 2021, I wait about a month of beautifying and then […]

In October 2025, Google announced the publication of a paper in Nature on a “verifiable quantum advantage” with “Quantum Echoes”. I like the name. It reminded me of one of my preferred Pink Floyd song, from the Meddle album, released in 1971! Google’s announcement was widely reported in social networks and the media as a […]