Andreas Wallraff

Research and education in #physics with a focus on #quantum #computing, #communication and #sensing with team @qudev @ETH_en. Director of the @ETHQuantumCntr.

[Andreas Wallraff @AndreasAtETH]

That is exciting. I got to know Pieter-Jan Derks at the @IBM QEC summer school in Tarrytown some years ago.
That school produced a lot of great researchers in QEC.
Good luck with the startup.
Maybe we can run some of your tools on our QEC hardware.

[Walrus Computing @WalrusComputing]

Today, Walrus Computing is coming out of stealth. We’re on a mission to turn fault-tolerant quantum computers into engines of discovery. We build the software layer that makes them useful to anyone with a question worth asking.

[Andreas Wallraff @AndreasAtETH]

Curious about developing #quantum communication hardware with #superconducting #circuits?

Interested in doing a PhD with a leading lab in quantum science and technology?

The Quantum Device Lab (@qudev, https://t.co/cF4jsoFdYJ) at the Department of Physics (@ETH_physics), ETH Zurich, member of the Quantum Center (@ETHQuantumCntr) and the @ETH Zürich - @psich_en Paul Scherrer Institut Quantum Computing Hub is looking for highly motivated Doctoral Students for the development of a superconducting qubit quantum network and research in quantum networking applications.

We have done the first experiments on quantum state transfer between qubits housed in different cryogenic systems (https://t.co/FCVYFB2PcE), performed the first loophole-free Bell inequality violation with superconducting circuits (https://t.co/wmcL97KWVW), and demonstrated the first repeated quantum error correction in the surface code (https://t.co/3ZwDlJdcjU).

Advance quantum science with superconducting circuits. Join the team!

Check out our job posting and apply online: Doctoral Students in Quantum Networking with Superconducting Circuits https://t.co/CtGrhji53D

[Andreas Wallraff @AndreasAtETH]

Congratulations to Ekaterina Al-Tavil for successfully defending her PhD at @ETH Zürich. Huge crowd attended the public talk!
Thanks to Andrea Hofmann (University of Basel) and Pasquale Scarlino (@EPFL) for serving as the external referees and Jerome Faist for chairing the defense for the Department of Physics (@ETH_physics), ETH Zurich.
Check out the photos below.
Find out more about Katia's rsearch here: https://t.co/cF4jsoFLOh .
Thanks to Dominic Hagmann for taking the nice photos.

[Andreas Wallraff @AndreasAtETH]

@orionfigen Bingo.

[Andreas Wallraff @AndreasAtETH]

Where am I?

[Andreas Wallraff @AndreasAtETH]

@SalariVahid Close.

[Andreas Wallraff @AndreasAtETH]

@urfagundem Almost. Not the right tower!

[Andreas Wallraff @AndreasAtETH]

@Qubotix I hope I did not raise expectations to high. But we made some progress in our work.

[Andreas Wallraff @AndreasAtETH]

Looking forward to be attending the Superconducting Qubits & Algorithms (SQA) 2026 conference in Gothenburg, Sweden from August 25 to 28. I will be giving an invited keynote talk on the opening evening and present new work on #quantum error correction from our lab.
Possibly, you get to see some new devices, such as the ones shown below, on this occasion.
The work I will be presenting was done at the Quantum Device Lab (https://t.co/cF4jsoFdYJ) of the Department of Physics (@ETH_physics), @ETH Zurich and at the @ETH_en Zürich - @psich_en Paul Scherrer Institut Quantum Computing Hub. and the Quantum Center, @ETHQuantumCntr.
Want to learn more about the conference? Check out this web site: https://t.co/FNKZTIEKVE
Are you attending as well?

[Andreas Wallraff @AndreasAtETH]

#eclipse at t RWTH Aachen.

[Andreas Wallraff @AndreasAtETH]

Looks like #Alemannia #Aachen (@Alemannia_AC) is a thing again.
The crowd is walking toward the season starting match of @DFB 3. Liga at #Tivoli.
Check for the results and more here: https://t.co/JZ83dKa1Vc

[Andreas Wallraff @AndreasAtETH]

Do you know how to combine #quantum and #classical (#conventional) neural networks in a #physics experiment? Check out our new paper "Hybrid Quantum-Classical Neural Networks for Recognizing Quantum Phases" which appeared on the @arxiv today: https://t.co/4KCSAB8F71 .
The work was done in collaboration with the theory group of Hartmann Michael and Petr Zapletal form the @UniFAU Erlangen-Nürnberg. The experimental work at @ETH_physics, @ETHQuantumCntr, and @ETH_en was led by Colin Scarato, Johannes Knörzer, Markus K. Hoffmann, Leon C. Sander, Luca Hofele, Shengpu Wang, Kilian Hanke, Ashay Sathe, Dominic Hagmann, Alexander Flasby, Michael J. Hartmann, Petr Zapletal, Andreas Wallraff, and Christoph Hellings.
Also, check out the complementary theory paper, which also appeared on the @arXiv today: https://t.co/gULrdKRniS .

[Andreas Wallraff @AndreasAtETH]

Enjoying my 40 USD surcharge ‘window seat’ on my delayed @united flight from LAX to SFO.
So no photos out of the window, I guess.
Special service for @staralliance members.

[Andreas Wallraff @AndreasAtETH]

Having a great time at the @UCLA #Quantum #Device Workshop with Mollie Schwartz (MIT Lincoln Laboratory), the internet sensation @zlatko_minev (@GoogleQuantumAI ), and the @UCLA bear.
Check out the program of the workshop here: https://t.co/33bMWmyGEY . It is never too late to learn more about quantum science with superconducting circuits and its applications.

[Andreas Wallraff @AndreasAtETH]

You are not a doctor, and maybe you have a PhD, and you need to do some surgery on your lattice to correct some gate errors quantumly: Here you can read how to do it. New paper out on @arxiv:2606.15190 [quant-ph] with the group of Markus Müller from @RWTH Aachen University and @fz_juelich entitled "Lattice surgery for near-term experimental logical qubit entanglement creation in planar architectures".
Read more about it here: https://t.co/tx3aXSLXuy .
The work was done by Lukas Bödeker, Áron Márton, Luis Colmenarez, PhD, Ilya Besedin, Andreas Wallraff, Markus Müller with work at @ETH Zürich supported by @IARPAnews, and @ETH_en Zürich.

[Andreas Wallraff @AndreasAtETH]

Sunday quiz:
Can you point at the @ETH_en #Zurich main building on this photo?
Do you recognize anything else?

[Andreas Wallraff @AndreasAtETH]

I am heading out to the #Quantum #Device #Workshop at @UCLA.
Last year it was a super fun event.
Looking forward to meet students and colleagues there.
Find out more about the program and the other contributors here: https://t.co/33bMWmy8Pq
Will you be attending in person or online?

[Andreas Wallraff @AndreasAtETH]

Check out this hot off the press article in the The New York Times on our work on #perfect #randomness : https://t.co/v6Gf9Do7G9
The work was done at Department of Physics (@ETH_physics), the #Quantum Center @ETHQuantumCntr , and @ETH_en #Zürich by Anatoly Kulikov, Simon Storz, Josua D. Schär, Martin Sandfuchs, Ramona Wolf, Florence Berterottière, Christoph Hellings, Andreas Wallraff & Renato Renner.

[Andreas Wallraff @AndreasAtETH]

Gooooood morning #Switzerland!
It is snowing!
Where am I?

[Andreas Wallraff @AndreasAtETH]

#Microwave #Crosstalk in Planar Superconducting Quantum Devices is common in many multi-component integrated superconducting quantum circuits and limits their performance, whether the circuits are used for #quantum #computing or for #sensing. In this new paper out on @arxiv today, we identify three main cross-talk mechanisms prevalent in many planar device and verify their origin in dedicated experiments.
Read more about our work here: https://t.co/PCZD4oP8C9 and let us know if you have any questions or comments.
The work was done at the Department of Physics (@ETH_physics), the Quantum Center (@ETHQuantumCntr), and the @ETH Zürich - @psich_en Paul Scherrer Institut Quantum Computing Hub by Yongxin Song, Dominic Hagmann, Kieran Dalton, Felix Henrich, Felix Wagner, Mohsen Bahrami Panah, Marek Pechal, and @AndreasAtETH. The work was supported by @IARPAnews, the @ETHFoundation1, and @ETH_en Zürich.