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The online PDF version of the 8th edition of the book “Understanding Quantum Technologies” is available since September 29th.
As I do every year, I continue to update the book, first to publish it on arXiv which I did late October. On top of many small updates, I added a small section on the “Making of” of this version of the book which is the first I did in LaTeX.
I then continued to refine it – and refinement is an endless task – to publish it on Amazon KDP using self-publishing. The most tedious part was to create the cover with the right spine size. I automatized it entirely with LaTeX, to fit Amazon’s constraints.
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In November 2025, Quantinuum released its Helios QPU with 98 qubits. It also announced it was sold to Singapore as part of a partnership with A*Star and to be deployed there in 2026. Helios got less attention than the recent news coming from Google (Willow, Echoes) and Microsoft (Majorana 1) but it deserves it. It is one of the best QPUs ever produced so far in the NISQ regime. I will look here at its key disclosed technical characteristics. It’s a first for me given I’ve mostly always published such posts only on superconducting and Majorana qubits.
Helios is fairly well described technically in Helios: A 98-qubit trapped-ion quantum computer by Anthony Ransford, M.S. Allman et al, arXiv, November 2025 (25 pages). Most of the information below comes from this preprint paper.
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Nous voici dans le 74ième épisode de Quantum, le podcast mensuel francophone de l’actualité quantique.
Et tant de news, anecdotes et analyse à partager en compagnie de Fanny Bouton. Au menu, nous avons toujours plein d’événements, et surtout la saison des prix Nobel de physique et les dernières annonces de Google. Sans compter diverses actualités des startups françaises que nous suivons de très près.
Et toujours au menu, le transcript et les liens utiles du podcast.
Evénements passés
Q2B 2025 Paris : toutes les vidéos de la Q2B Paris de septembre 2025 sont disponibles. Avec notamment la forte présence de Quandela avec les interventions de Pascale Senellart, Shane Mansfield, Xavier Pereira et Thomas Volz. Et aussi Loic Le Loarer sur la stratégie nationale quantique. Au passage, mes propres interventions : The energetic challenges of FTQC et An End-User View of Hardware Roadmaps.
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