Quantum Device Lab

Andreas Wallraff Verified account @AndreasAtETH · Apr 20

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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Andreas Wallraff Verified account @AndreasAtETH · Apr 1

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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Andreas Wallraff Verified account @AndreasAtETH · Jan 9, 2025

Check out our new @qudev lab (@ETH_physics @ETHQuantumCntr) paper on entangling #quantum error corrected logical qubits in superconducting circuits entitled "Realizing Lattice Surgery on Two Distance-Three Repetition Codes with Superconducting Qubits" out on @arxiv today (arxiv.org/abs/2501.04612).
The work was done in collaboration with @fz_juelich and @RWTH Aachen, and was executed at the @ETH_en Zurich - @psich_en Quantum Computing Hub.
The work was supported by @IARPAnews, by @SBFI_CH, by @Innosuisse, by the @ETHFoundation1 and by @ETH #Zurich.

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Andreas Wallraff Verified account @AndreasAtETH · Oct 30, 2024

Check out a new set of photos of our Superconducting Quantum Circuits lab at the @ETH_en - @psich_en #Quantum #Computing Hub.
Let me know if you have any questions.

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