Quantum computer scientist @jkulinz, coin tossing enthusiast and armchair historian. Lived and worked in Switzerland, the UK, Germany, Australia and the US.
Austria
Joined May 2021
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The @FWF_at and my favorite Austrian radio station @oe1 do a series where they pair up scientists with business professionals to discuss timely topics. Proud to be part of the next installment airing on October 11th, 6:15PM. This was fun! 📻
oe1.orf.at/programm/20261011…
I have been intrigued by the computational complexity of Clifford circuit synthesis since a fun project with @rbrtwll + team in 2023.
Our postdoc Luna Keller now found an elegant argument that settles it: optimal Clifford synthesis is NP-complete. Kudos!
scirate.com/arxiv/2610.02029
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 + donated to the Sloth Conservation Foundation. Great initiative by Marwa Marso!
(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 Johannes Kepler University Linz 🇦🇹. Application deadline is November 30th, 2025: jku.at/en/the-jku/work-at-th…
(II/III) We're looking for young talent with a background in CS, math, EE or quantum physics and growth potential. Your future research focus should be in quantum CS, preferably with a connection to AI. More weight should be given to basic, rather than applied, research.
@RobertHuangHY, myself and @preskill 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/2510.08070
Huge thanks to Viet Tran, Mariami Gachechiladze and MVP Jan Noeller for a productive and fun collaboration!
Plus, big shoutout to @sitanch, @gong_weiyuan and Qi Ye for developing elegant new frameworks for proving hardness of learning tasks which we managed to adapt to our needs.
🇦🇹🇭🇺Austro-Hungarian reunion: 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 Starting Grant ! Happy that he also decided to return to Europe, and proud to be his friend!
Last fall I taught two big classes on **computational complexity** (left selfie) and **quantum computing** (right selfie). Lecture notes are here: jku.at/fileadmin/gruppen/180…,
jku.at/fileadmin/gruppen/180….
It was a lot of work, but now I am happy+proud to share them. 😊 Feedback welcome!
Richard Kueng retweeted
There are a variety of postdoctoral opportunities in quantum science and engineering @Caltech, listed here. The application deadline is November 15. Join us!
qse.caltech.edu/qseopportuni…
Richard Kueng retweeted
✨ Join us for an engaging VCQ Colloquium Talk!
🚀 Richard Küng from Johannes Kepler Universität Linz, will explore:
“Scalable quantum-classical interfaces and their applications to learning in the quantum realm”
🗓️ 04 November 2024, 17:00
📍 Boltzmanngasse 5
Fall term is teaching time for yours truly. This year, we have ~180 registrations for our computational complexity course (left) and an unbelievable 150 curious young minds signed up for my elective quantum computing course (right)! Hope the positive vibes persist @jkulinz.
*) Our lecture notes for computational complexity can be found here: jku.at/fileadmin/gruppen/180…
*) Our lecture notes for quantum computing can be found here: jku.at/fileadmin/gruppen/180…
I'm going to give a talk @QuantumSpain_ES next week. Unfortunately, only remotely -- for now. :-)
Thanks @AlhambraAlvaro for making this possible. Hasta el proximo martes! 🇪🇸⚛️🇪🇸
New seminar coming up!
Join us for an enlightening session with @RichardKueng as he delves into "Classical Shadows in Theory, Numerics, and Experiment."
🗓️ 8 October 2024, 4:00 PM.
Don’t miss out—register now!
🔗events.teams.microsoft.com/e…
@derStandardat -- one of the largest and most reputable austrian Newspapers -- engaged with me in a pleasant personal chat about my past, present and future. This is the result and I'm very happy (and humbled) how it turned out. Feel free to have a look:
derstandard.at/story/3000000…
"Was macht ein Top-Quanteninformatiker ausgerechnet in Linz?" - JKU Forscher @RichardKueng zeigt im @derStandardat, wie attraktiv der Forschungsstandort Österreich - und natürlich auch die #JKULinz ist - und wie dieser noch attraktiver werden könnte💡 go.jku.at/e24e7
big shout out to @Rennert_DC from @derStandardat for making this possible and to Karin Krichmayr for an amazing interview experience. And do check out Florian Voggeneder -- a phantastic light artist responsible for the pictures: voggeneder.net/
Richard Kueng retweeted
"Was macht ein Top-Quanteninformatiker ausgerechnet in Linz?" - JKU Forscher @RichardKueng zeigt im @derStandardat, wie attraktiv der Forschungsstandort Österreich - und natürlich auch die #JKULinz ist - und wie dieser noch attraktiver werden könnte💡 go.jku.at/e24e7
Richard Kueng retweeted
Less than 2 weeks left to submit your best works to QIP!
For submission as contributed talks, use the server:
qip2025.hotcrp.com
For poster-only submissions, use:
hotcrp.science.uva.nl/qip202…
Last year, there were 575 talks submissions. How many will we get this year?
Richard Kueng retweeted
John Preskill @preskill clarifies why he's receiving the John Stewart Bell Prize: because of these two guys. @FieldsInstitute @RichardKueng @RobertHuangHY
Jetzt ist schon wieder was passiert: unser Art&Science Projekt **BruQner -- the sound of Entanglement** wird ein opening act beim @ArsElectronica Festival nächsten Mittwoch (4.9), 22:00 im Linzer Dom. Eintritt ist frei! This should be fun! youtu.be/m5-0rCh3GbY?si=aW62… – at Linz, Austria
*Big shout-out an unser Team*:
@clemenswenger (Musikalische Leitung), Enar de Dios Rodrígues (visuelle Gestaltung), Philipp Haslinger & Benjamin Orthner (@tuvienna), @MartinRingbauer (@uniinnsbruck), Johannes Kofler & Alex Ploier und ich (@jkulinz), sowie den zwei Domorganisten! – at Linz, Austria
Ein Projekt der OÖ KulturEXPO Anton Bruckner 2024 in Kooperation mit @ArsElectronica und freundlicher Unterstützung von LIT-@jkulinz, VCQ, @uniinnsbruck, @tuvienna, @SFBBeyondC (powered by @FWF_at) und @Stadt_Wien Kultur. – at Austria