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Frédéric Grosshans

@fgrosshans.mathstodon.xyz.ap.brid.gy

A French researcher in quantum information, expressing his own views. A few old toots at qubit-social.xyz/@fgrosshans [bridged from mathstodon.xyz/@fgrosshans on the fediverse by fed.brid.gy ]

Posts Replies Media

Frédéric Grosshans @fgrosshans.mathstodon.xyz.ap.brid.gy · 23/06/2026

The thermostat in my office says “Hi !” 👋 #FriendlyElectronics #Heatwave

A thermostat on a wall. On the bottom of it, a small LCD 8 segment display. Instead of showing a 2 digit number, it just says "Hi"

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Frédéric Grosshans @fgrosshans.mathstodon.xyz.ap.brid.gy · 17/02/2026

What a fantastic tool! marshdeer.github.io/xkcd2501-genera…

A variant of the XKCD 2501 comics, showing two stick figures talking.
— Quantum circuit design is a second nature to us, quantum info people, so it's easy to forget that the average people probably only knows the circuits for teleportation and QFT.
— and Grover, of course
— of course.
Legend: Even when they're trying to compensate for it, experts in anything wildly overestimate the average person familiarity with their field

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Frédéric Grosshans @fgrosshans.mathstodon.xyz.ap.brid.gy · 08/05/2025

I found this in the middle of a table of symbols. Apparently, in French, for Im ( Z ), the imaginary part of a complex number, we should use "Je suis ( z )"

(English below)
Tableau avec des notations mathématiques et des explications. Deux lignes traduisent z-étoile et z-barre par conjugaison compliquée. Une ligne dit que la notation de la partie imaginaire de Z, c'est "Je suis (Z)"

A table explaining some scientific notations with obvious translation mistakes. The notations z-star and z-bar is said to denote "complicated conjugation" instead of a complex conjugation, and the notation Im(z) has been itself translated as "Je suis (z)", that is "I am (Z)"

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Frédéric Grosshans @fgrosshans.mathstodon.xyz.ap.brid.gy · 30/04/2025

En conf à l'ESTEC (centre européen de technologies spatiales), je tombe sur ce #SpaceInvader. Sous l'influence de @LegalizeBrain , je télécharge enfin l'application Flash Invader.

Photo d'une mosaïque de l'artiste "Space Invader", sur un mur en béton gris. C'est une grille de 12×15 carreaux, représentant un extra-terrestre très pixelisé en bleu clair et blanc sur fond bleu marine avec quelques pixels jaunes au dessus

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Frédéric Grosshans @fgrosshans.mathstodon.xyz.ap.brid.gy · 25/04/2025

Cette question sur le formulaire de demande d’ordre de mission du CNRS me montre que je me serais peut-être plus amusé en choisissant un autre sujet de recherche !

Extrait de formulaire en ligne avec la question “Utilisez-vous un drone aérien” et la réponse “Non” cochée

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Frédéric Grosshans @fgrosshans.mathstodon.xyz.ap.brid.gy · 16/01/2025

#LTQI Today's Quantum LIP6 seminar , Joseph Bowles, from Xanadu on scalable training of large quantum machine language models , based on papers 2306.14962 and 2501.04776 as well as upcoming work. Joseph Boules tries to look out what is actually possible in […] [Original post on mathstodon.xyz]

Picture of a slide where different QML strategies are compared on classifying noisy bars and dots with 16 qubits. There is an orders of magnitude improvement ( 10⁸ vs 10¹⁰) in the number of shots needed to learn of the commuting equrivariant circuit compared to the non- commuting one and the quantum convolutional. And the test accuracy is better (close to 1) in the 1st case

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