Andreas Wallraff
@andreasateth.bsky.social
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.
Do you find it challenging to accurately control the transition frequency of your superconducting #qubit by applying magnetic flux? Frequently, the frequency dependence of the response function of the electronics, the wiring, and the flux-bias circuitry must be compensated for to accurately ..
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November 8, 2025 at 1:12 PM
Do you find it challenging to accurately control the transition frequency of your superconducting #qubit by applying magnetic flux? Frequently, the frequency dependence of the response function of the electronics, the wiring, and the flux-bias circuitry must be compensated for to accurately ..
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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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October 4, 2025 at 3:18 PM
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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This is a beautiful place!
Do you know where this is?
And what I am here for?
Do you know where this is?
And what I am here for?
September 23, 2025 at 4:21 PM
This is a beautiful place!
Do you know where this is?
And what I am here for?
Do you know where this is?
And what I am here for?
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 ...
With an updated list of publications: qudev.phys.ethz.ch/publications ...
September 14, 2025 at 6:59 PM
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 ...
With an updated list of publications: qudev.phys.ethz.ch/publications ...
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...
Read more about it here: journals.aps.org/prapplied/ab...
August 30, 2025 at 2:32 PM
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...
Read more about it here: journals.aps.org/prapplied/ab...
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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August 21, 2025 at 8:47 PM
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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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?
Are there any experts on superconducting circuits out here to confirm or deny?
August 14, 2025 at 1:28 AM
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?
Are there any experts on superconducting circuits out here to confirm or deny?
Reposted by Andreas Wallraff
@andreasateth.bsky.social and I exchange pullovers at QEC2025
August 13, 2025 at 2:48 AM
@andreasateth.bsky.social and I exchange pullovers at QEC2025
Reposted by Andreas Wallraff
Just had the pleasure to see this in person. Very impressive stuff, @andreasateth.bsky.social and team!
August 12, 2025 at 2:55 PM
Just had the pleasure to see this in person. Very impressive stuff, @andreasateth.bsky.social and team!
If you are studying #Physics or #Quantum #Engineering (or any other subject) at @ethz.ch #Zürich and are interested in #quantum #science and #technology check out our new advanced class on "Quantum Science with Superconducting Circuits: Advanced Topics".
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August 9, 2025 at 7:39 AM
If you are studying #Physics or #Quantum #Engineering (or any other subject) at @ethz.ch #Zürich and are interested in #quantum #science and #technology check out our new advanced class on "Quantum Science with Superconducting Circuits: Advanced Topics".
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Congratulations to Dante Colao Zanuz for passing his PhD exam at the Department of Physics of @ethz.ch. Dante did his research work on the fabrication of superconducting circuits for #quantum information processing at our Quantum Device Lab which is part of the #Quantum Center of ETH Zurich.
August 1, 2025 at 7:43 AM
Congratulations to Francois Swiadek for successfully defending his PhD at the Department of Physics, @ethz.ch yesterday. Francois did work on designing superconducting circuits for #quantum error correction and worked on further improving the readout of superconducting qubits.
July 30, 2025 at 6:32 AM
I hope you will enjoy taking a look at our lab's most recent #quantum paper on "Resource-Efficient Cross-Platform Verification with Modular Superconducting Devices". The work is available on the arXiv as arXiv:2507.15302 [quant-ph] following this link: arxiv.org/abs/2507.15302 .
July 22, 2025 at 3:12 PM
I hope you will enjoy taking a look at our lab's most recent #quantum paper on "Resource-Efficient Cross-Platform Verification with Modular Superconducting Devices". The work is available on the arXiv as arXiv:2507.15302 [quant-ph] following this link: arxiv.org/abs/2507.15302 .
I will be presenting our work on "Meter-Scale Microwave Quantum Interconnects: From Fundamental Physics to Applications in #Quantum Computing" today in a talk at the FAU Erlangen-Nürnberg, where I graduated with my PhD almost exactly 25 years ago.
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July 21, 2025 at 6:20 AM
I will be presenting our work on "Meter-Scale Microwave Quantum Interconnects: From Fundamental Physics to Applications in #Quantum Computing" today in a talk at the FAU Erlangen-Nürnberg, where I graduated with my PhD almost exactly 25 years ago.
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I endorse this statement.
Do you?
Do you?
July 19, 2025 at 7:08 PM
I endorse this statement.
Do you?
Do you?
Check out our newest paper entitled "Complete Self-Testing of a System of Remote Superconducting Qubits" published this week in the American Physical Society journal as Phys. Rev. Lett. 135, 030801 (2025): journals.aps.org/prl/abstract... .
Complete Self-Testing of a System of Remote Superconducting Qubits
Self-testing protocols enable the certification of quantum systems in a device-independent manner, i.e., without knowledge of the inner workings of the quantum devices under test. Here, we demonstrate...
journals.aps.org
July 19, 2025 at 7:19 AM
Check out our newest paper entitled "Complete Self-Testing of a System of Remote Superconducting Qubits" published this week in the American Physical Society journal as Phys. Rev. Lett. 135, 030801 (2025): journals.aps.org/prl/abstract... .
This was not the plan for my trip to Erlangen with Deutsche Bahn.
July 18, 2025 at 8:47 AM
This was not the plan for my trip to Erlangen with Deutsche Bahn.
Read this nice article on our #Quantum #Engineering Master program at ETH Zurich.
It is currently featured on the ETH main web entry page.
A degree for the quantum age ethz.ch/en/news-and-... via @eth
It is currently featured on the ETH main web entry page.
A degree for the quantum age ethz.ch/en/news-and-... via @eth
A degree for the quantum age
In 2019, ETH Zurich launched one of the world’s first Master’s degrees in Quantum Engineering. Since then, interest in the programme has soared – and its first graduates are already making their mark…
ethz.ch
July 11, 2025 at 4:11 PM
Read this nice article on our #Quantum #Engineering Master program at ETH Zurich.
It is currently featured on the ETH main web entry page.
A degree for the quantum age ethz.ch/en/news-and-... via @eth
It is currently featured on the ETH main web entry page.
A degree for the quantum age ethz.ch/en/news-and-... via @eth
Goooooood morrrrrnnnning from #Schatzalp, #Davos, #Switzerland. the site of this year's ETH #Zurich Quantum Center Retreat.
Great to meet all our ETH Zürich #quantum researchers here for a few exciting days.
Check out the program here: qc.ethz.ch/news-events/...
Great to meet all our ETH Zürich #quantum researchers here for a few exciting days.
Check out the program here: qc.ethz.ch/news-events/...
July 10, 2025 at 5:48 AM
Goooooood morrrrrnnnning from #Schatzalp, #Davos, #Switzerland. the site of this year's ETH #Zurich Quantum Center Retreat.
Great to meet all our ETH Zürich #quantum researchers here for a few exciting days.
Check out the program here: qc.ethz.ch/news-events/...
Great to meet all our ETH Zürich #quantum researchers here for a few exciting days.
Check out the program here: qc.ethz.ch/news-events/...
Enjoying the weekend football/soccer matches at the ASVZ pitches at either the ETH Hoenggberg campus or the Fluntern facility.
Thanks to Claudio for organizing since many years. Is it more than 10 years already? It started out with a mostly ETH Physics crowd originally, but a very mixed group now.
Thanks to Claudio for organizing since many years. Is it more than 10 years already? It started out with a mostly ETH Physics crowd originally, but a very mixed group now.
July 6, 2025 at 8:58 AM
Enjoying the weekend football/soccer matches at the ASVZ pitches at either the ETH Hoenggberg campus or the Fluntern facility.
Thanks to Claudio for organizing since many years. Is it more than 10 years already? It started out with a mostly ETH Physics crowd originally, but a very mixed group now.
Thanks to Claudio for organizing since many years. Is it more than 10 years already? It started out with a mostly ETH Physics crowd originally, but a very mixed group now.
Celebrating the 2D Cluster State paper with a home made cake by Kevin.
Well done!
www.linkedin.com/posts/andrea...
Well done!
www.linkedin.com/posts/andrea...
July 4, 2025 at 4:02 PM
Celebrating the 2D Cluster State paper with a home made cake by Kevin.
Well done!
www.linkedin.com/posts/andrea...
Well done!
www.linkedin.com/posts/andrea...
Check out our new article in Nature Communications on "Deterministic generation of two-dimensional multi-photon cluster states" by James O’Sullivan, Kevin Reuer, Aleksandr Grigorev, Xi Dai, Alonso Hernández-Antón, Manuel H. Muñoz Arias, Christoph Hellings, Alexander Flasby, Dante Colao Zanuz, ...
July 1, 2025 at 2:11 PM
Check out our new article in Nature Communications on "Deterministic generation of two-dimensional multi-photon cluster states" by James O’Sullivan, Kevin Reuer, Aleksandr Grigorev, Xi Dai, Alonso Hernández-Antón, Manuel H. Muñoz Arias, Christoph Hellings, Alexander Flasby, Dante Colao Zanuz, ...