Andreas Wallraff

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Andreas Wallraff

Andreas Wallraff

@AndreasAtETH

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

Zurich, Switzerland Katılım Temmuz 2009
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Andreas Wallraff
Andreas Wallraff@AndreasAtETH·
Do you wonder how you can execute a #quantum algorithm on a quantum server in a way that the operator of the server does know neither the task nor the result? Here we conceptually demonstrate blind quantum computing using two modules on a modular 3D integrated #superconducting #circuit. We also analyze the overhead incurred by doing the computation blindly. Such methods could be used in the future over larger distances using either microwave or optical interconnects. Check out our new paper "Blind Quantum Computation on a Modular Superconducting Processor" which appeared on @arxiv today as arXiv:2605.14656 (arxiv.org/abs/2605.14656). The authors are Yongxin Song, Johannes Knörzer, Kieran Dalton, @AndreasAtETH, @BesseJC. The work was done at the Quantum Device Lab of the Department of Physics (@ETH_physics), @ETH Zurich, the Quantum Center, @ETHQuantumCntr, and the @ETH_en Zürich - @psich_en Paul Scherrer Institut Quantum Computing Hub. The work was supported by State Secretariat for Education, Research and Innovation SERI and ETH Zürich.
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Andreas Wallraff
Andreas Wallraff@AndreasAtETH·
What the heck is this colorful thing above lake #Zurich? Seen today.
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Andreas Wallraff
Andreas Wallraff@AndreasAtETH·
This year our Quantum Device Lab (@qudev , qudev.phys.ethz.ch) has completed its first 20 years at the Department of Physics (@ETH_physics) of @ETH Zürich, since six years we are also part of the Quantum Center, @ETHQuantumCntr, and since five years we co-run the @ETH_en Zürich - @psich_en Paul Scherrer Institut #Quantum Computing Hub. One of the aspects for the whole team to be proud of is the many successes of our current and former lab members. On the occasion of our lab's 20th anniversary, I give a shout out to former lab members who have moved on to graduate school, who now do postdocs, who started their own labs as faculty members, who have started companies, who have moved on to work in the quantum industry or in the tech industry. Today, I start with the professors. There are quite a few of them. Check out the article linked below. linkedin.com/pulse/first-tw…
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Andreas Wallraff
Andreas Wallraff@AndreasAtETH·
Also check out the all time favorite paper from our lab Engineering cryogenic setups for 100-qubit scale superconducting circuit systems S. Krinner, S. Storz, P. Kurpiers, P. Magnard, J. Heinsoo, R. Keller, J. Lütolf, C. Eichler, and A. Wallraff EPJ Quantum Technol. 6, 2 (2019), open access: arXiv:1806.07862 link.springer.com/article/10.114…
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Andreas Wallraff
Andreas Wallraff@AndreasAtETH·
Are you curious about the insights we gained when building our 30-m-long cryogenic microwave-frequency quantum link which we used to do a loophole free Bell test with superconducting qubits? This system also serves as a role model for how to interconnect devices in a large-scale modular superconducting #quantum #computer. In the new paper A Modular Cryogenic Link for Microwave Quantum Communication Over Distances of Tens of Meters out on @arxiv today we describe some of our learnings from constructing the system. Read more here: arxiv.org/abs/2604.15971 . Let us know if you have any questions. The work was done at the Quantum Device Lab (qudev.phys.ethz.ch) of the Department of Physics (@ETH_physics) and the @ETHQuantumCntr of @ETH_en Zurich by Josua D. Schär, @simonstorz , Paul Magnard (now at Isentroniq), @PhilippKurpiers (now at Rohde & Schwarz), Janis Lütolf, Melvin Gehrig, @BesseJC , Anatoly Kulikov, and @AndreasAtETH with support from the European Research Council (ERC), and @ETH Zürich.
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Sameer Sonar
Sameer Sonar@SameerSonar19·
@AndreasAtETH Impressive system!! Do you envision adding thermal isolation valves so one fridge can be decoupled and warmed up while the other fridge stays cold?
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Andreas Wallraff
Andreas Wallraff@AndreasAtETH·
Happy 20th anniversary @qudev! On April 1, 2026 our #Quantum #Device #Lab (qudev.phys.ethz.ch) celebrates its 20th anniversary as a lab at the Department of Physics (@ETH_physics) of @ETH_en Zürich, now part of the Quantum Center @ETHQuantumCntr and the @ETH Zürich - @psich_en Paul Scherrer Institut Quantum Computing Hub. On April 1, 2006 our research work started with the first master student and a couple of graduate students. If you are curious about our #research, check out our #papers (qudev.phys.ethz.ch/publications) or #talks (qudev.phys.ethz.ch/publications) from the past 20 years. We also had a large number of students, researchers, and staff who contributed to the success of our lab, more than a few hundred in total. Many of them are now running their own labs, or work in the quantum industry and beyond. Below you find a picture of our 20th from 2026 and 1st anniversary (with cake and candle) from 2007 with @peterleek (CSO of Oxford Quantum Circuits @OQC_Tech), @fink_johannes (Professor at Institute of Science and Technology Austria @ISTAustria), Gabriel Puebla-Hellmann (GM at QZabre LLC), Martin Göppel, Romeo Bianchetti, Lars Steffen (Manager at @EraneosNL), Matthias Baur (Principal Scientist at ABB). And the team photos from 2016, and 2025. If I find time, I will cover a bit more of the lab history on the occasion.
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Charles W. Clark
Charles W. Clark@g8ge·
Will there be a hockey game?
Andreas Wallraff@AndreasAtETH

Welcome to the American Physical Society @APSphysics Global #Physics Summit #APSSummit26, also known as the APS March Meeting #APSmarch, in #Denver this year. I just have arrived! Check out the updated program of our @qudev lab's contributions to the #conference and also the information on where to attend the #Quantum #Hockey Match by following this link: lnkd.in/dYEzV_n8 P.S.: Anyone taking a selfie at the APS logo will have the butt of a big blue bear in the background.

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Andreas Wallraff
Andreas Wallraff@AndreasAtETH·
Welcome to the American Physical Society @APSphysics Global #Physics Summit #APSSummit26, also known as the APS March Meeting #APSmarch, in #Denver this year. I just have arrived! Check out the updated program of our @qudev lab's contributions to the #conference and also the information on where to attend the #Quantum #Hockey Match by following this link: lnkd.in/dYEzV_n8 P.S.: Anyone taking a selfie at the APS logo will have the butt of a big blue bear in the background.
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Andreas Wallraff
Andreas Wallraff@AndreasAtETH·
Special luggage. Where am I going and what for? Also will Swiss and Air Canada manage to loose my gear again?
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