At our QUICK Quantum Computing Group, we’ve adopted the sloth as our group mascot, a QUICK reminder that good things take time! 🦥

To celebrate International Sloth Day last week, we raised funds and donated to the Sloth Conservation Foundation. Great initiative by Marwa Marso (last row center)!

(I/III) We're excited to announce a new tenure track opening! The position is called 'quantum informatics' and is affiliated with our QUICK group within the CS+AI division at @jku.at 🇦🇹. Application deadline is November 30th, 2025: www.jku.at/en/the-jku/w...

Fruitful crossover between Berlin, Germany, and Linz, Austria. @faehrmion.bsky.social -- MVP of this project -- discovered most of the shadow of the Hadamard test while spending time with our QUICK sloth team in Linz, Austria 🇦🇹.

In 2021, Robert Huang, myself & @preskill.bsky.social identified quantum state learning tasks that look hard, but become easy if you jointly process 2 copies. I have long wondered whether such challenges exist for c>2 copies. Turns out yes, there is an infinite hierarchy scirate.com/arxiv/2510.0...

The pioneering work of Clarke, Devoret, and Martinis showed that very cold electrical circuits behave in ways that exhibit fundamental principles of quantum physics.
www.nobelprize.org/prizes/physi...

🇦🇹🇭🇺 Austro-Hungarian reunion at the Hungarian Academy of Sciences. András Gilyén is probably one of the best quantum algorithm designers out there. He co-developed quantum SDPs, QSVT & Gibbs Sampling. No wonder he won an ERC! Happy that he also decided to return to Europe, and proud to be his friend!

💡 Mit einer großen Delegation ist Bundespräsident Alexander Van der Bellen im Mai nach Japan gereist. Mit dabei: die JKU Linz mit ihrem Quantenforscher Richard Küng. Österreich und auch die JKU wird sich auf der EXPO in Osaka präsentieren. 🎌 http://go.jku.at/n25m1
📸 privat

Um den Einsatz der JKU Forscher*innen im Bereich Wissenschaftkommunikation zu würdigen, wurden die Kepler Awards ins Leben gerufen. Das Interesse war enorm: Es gab mehr als 90 Einreichungen, die sich in vielfältigen Initiativen engagieren. Wir gratulieren alle Gewinner*innen!🏆 http://go.jku.at/n25l7

A short info videoabout MRI imaging @jku.at which combines two of my favorite things: quantum technology ('spins') and math of imaging ('Fourier transforms'). It also made a very real difference for my personal life when I had nasty knee injuries:
www.youtube.com/watch?v=NBfb...

new article in @derstandard.at about how to program a quantum computer (in German):
www.derstandard.de/story/300000...

In the shadow of the Hadamard test: Using the garbage state for good and further modifications

scirate.com/arxiv/2505.1...

This work adds an unexpected twist to the Hadamard test by exploiting previously overlooked information.

www.quantumscience.at volunteered me to host my first proper workshop (~120 participants) at @jku.at. It really hits differently when you do not only welcome your peers at your academic institution, but also your hometown. We had a blast-furnace! @voestalpine.bsky.social steelfactory pun intended. 🇦🇹

Last week I had fun teaching quantum complexity at the kaleidoscope research school at CIRM, Marseille 🇫🇷🥖: (conferences.cirm-math.fr/3225.html. Amazing location, great atmosphere and, finally, enough blackboard space for a lecture of yours truly! 😋
Lecture notes are here: www.jku.at/fileadmin/gr...

Four Tenure-track positions in AI exclusively for female applicants at @jkulinz.bsky.social! Details available soon at www.jku.at/en/lit-artif...

A reminiscing article about our quantum music project 'the sound of entanglement' made it into one of Austria's most reputable newspapers - @derstandard.at. More than 3000 people attended, a truly unbelievable experience. Huge thanks to the entire team and to @ya-oeaw.bsky.social for publishing it!

Last fall I taught two big classes on **computational complexity** (left selfie) and **quantum computing** (right selfie). We had a blast! Lecture notes are here: www.jku.at/fileadmin/gr..., www.jku.at/fileadmin/gr....
It was a lot of work, but now I am happy+proud to share them. Feedback welcome!