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Andreas Wallraff

@andreasateth.bsky.social

1.8K followers 950 following 310 posts

Research and education in physics with a focus on quantum computing, communication and sensing with team Qudev (https://qudev.phys.ethz.ch/) at ETH Zurich. Team lead at the ETHZ-PSI Quantum Computing Hub. Director of the Quantum Center at ETHZ.

qudev.phys.ethz.ch

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Andreas Wallraff @andreasateth.bsky.social · 6d

Mihai Gabureac (now at PSI Paul Scherrer Institut), Kevin Reuer, Kadir AKIN (now at PSI Paul Scherrer Institut) , Baptiste Royer, Alexandre Blais, and Andreas Wallraff.
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Andreas Wallraff @andreasateth.bsky.social · 6d

The work was done by Paul Magnard (now founder of Isentroniq), Simon Storz (now postdoc at Department of Physics (D-PHYS), ETH Zurich), Philipp Kurpiers (now at Rohde & Schwarz), Josua Schär, Fabian Marxer (now at IQM Quantum Computers), Janis Lütolf, Theo Walter, JC Besse,
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Andreas Wallraff @andreasateth.bsky.social · 6d

This was a major achievement which enabled a range of experiments at our lab (qudev.phys.ethz.ch/publications) and also elsewhere.
Read more here in this @PhysRevLett 125, 260502 (2020): journals.aps.org/prl/abstract... .
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Andreas Wallraff @andreasateth.bsky.social · 6d

Five years ago at the @qudev Lab of ETH Zürich we have reported on the first realization of a "Microwave #Quantum Link between Superconducting Circuits Housed in Spatially Separated Cryogenic Systems" coupling #qubits across a distance of 5 meters through a #microwave waveguide.
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Andreas Wallraff @andreasateth.bsky.social · 17d

Well done!

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Andreas Wallraff @andreasateth.bsky.social · 17d

This is a beautiful place!
Do you know where this is?
And what I am here for?

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Andreas Wallraff @andreasateth.bsky.social · 20d

A lot more research and development needs to be done to have large scale fault-tolerant quantum computers to become a reality. Small quantum computers, with all the functionality exist though to try out concepts and develop algorithms also for quantum error correction.

Andreas Wallraff @andreasateth.bsky.social · 25d

Our lab is part of the Quantum Center, @ethz.ch Zurich, the Department of Physics (D-PHYS), ETH Zurich, and the ETH Zürich - @psich.bsky.social Paul Scherrer Institut Quantum Computing Hub.

Andreas Wallraff @andreasateth.bsky.social · 25d

... A list of current lab members, including the new ones for this term: qudev.phys.ethz.ch/members
and much more ...
The page will continue to be updated throughout the next weeks.

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Andreas Wallraff @andreasateth.bsky.social · 25d

Just in time for the start of the new fall term 2025, our Quantum Device Lab's new and improved web site is available. Go and check it out here: qudev.phys.ethz.ch
With an updated list of publications: qudev.phys.ethz.ch/publications ...

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Andreas Wallraff @andreasateth.bsky.social · Aug 30

The work was supported by State Secretariat for Education, Research and Innovation SERI, by Innosuisse, IARPA, by the Swiss National Science Foundation @snsf.ch, the @ethfoundation.bsky.social, and @ethz.ch Zürich.

Andreas Wallraff @andreasateth.bsky.social · Aug 30

... at the Department of Physics (D-PHYS), ETH Zurich, the Quantum Center, ETH Zurich and the @ethz.ch Zürich— @psich.bsky.social Paul Scherrer Institut #Quantum Computing Hub,

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Andreas Wallraff @andreasateth.bsky.social · Aug 30

The paper was authored by Song Yongxin,, Liberto Beltrán, Ilya Besedin, Michael Kerschbaum, Marek Pechal, François Swiadek, Christoph Hellings, Dante Colao Zanuz, Alexander Flasby, Jean-Claude Besse, and Andreas Wallraff ...

Andreas Wallraff @andreasateth.bsky.social · Aug 30

New paper from our lab on Realizing a constant-depth fan-out with real-time feedforward on a superconducting quantum processor out as Phys. Rev. Applied 24, 024068 – Published 28 August, 2025.
Read more about it here: journals.aps.org/prapplied/ab...

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Andreas Wallraff @andreasateth.bsky.social · Aug 29

Looks like I will be taking an appropriate mode of transportation for a #quantum physicist on my flight from #IAD to #ZRH tonight.
Do you know who is advertizing this?

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Andreas Wallraff @andreasateth.bsky.social · Aug 21

journals.aps.org/rmp/abstract...

Circuit quantum electrodynamics

This review surveys the development over the last 15 years of circuit quantum electrodynamics, the nonlinear quantum optics of microwave electrical circuits. In analogy to cavity quantum electrodynami...

journals.aps.org

Andreas Wallraff @andreasateth.bsky.social · Aug 21

Alexandre Blais (UdSherbrooke Université de Sherbrooke), Arne Grimsmo (Amazon Web Services (AWS)), Steven Girvin (@yaleqi.bsky.social), Andreas Wallraff (@ethz.ch)

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Andreas Wallraff @andreasateth.bsky.social · Aug 21

Follow this link to read the article: journals.aps.org/rmp/abstract... and let us know what you find particularly useful and which parts could be improved or extended.

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journals.aps.org

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Andreas Wallraff @andreasateth.bsky.social · Aug 21

Looks like our Circuit Quantum Electrodynamics (or short Circuit QED) Review (@apsphysics.bsky.social American Physical Society, Rev. Mod. Phys. 93, 025005 – Published 19 May, 2021) got the first 2000 citations. At least that is what Google Scholar claims.

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Andreas Wallraff @andreasateth.bsky.social · Aug 18

Done.

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Andreas Wallraff @andreasateth.bsky.social · Aug 14

Insider!

Andreas Wallraff @andreasateth.bsky.social · Aug 14

I think I took a photo of a two-level defect, also known as a TLS, at the QEC25 conference on #quantum error correction at Yale and @yaleqi.bsky.social today.
Are there any experts on superconducting circuits out here to confirm or deny?

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Reposted by Andreas Wallraff

kenbrownquantum.bsky.social @kenbrownquantum.bsky.social · Aug 13

@andreasateth.bsky.social and I exchange pullovers at QEC2025

Andreas Wallraff in a Duke Quantum Center 1/4-zip with Ken Brown in an ETH Zurich Quantum hoodie in front of a giant fish fossil.

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Reposted by Andreas Wallraff

Richard Kueng @richardkueng.bsky.social · Aug 12

Just had the pleasure to see this in person. Very impressive stuff, @andreasateth.bsky.social and team!

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Andreas Wallraff @andreasateth.bsky.social · Aug 9

I expect the course to be cross-listed for additional study programs soon.
Department of Physics, Department of Information Technology and Electrical Engineering, @ethz.ch, Quantum Center, ETH Zurich, Quantum Engineering Commission
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