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.
Francois Swiadek, Christian Kraglund Andersen (now professor @tudelft @qutech.bsky.social), Christopher Eichler (now professor FAU Erlangen), @andreasateth.bsky.social supported by IARPA, the @snsf.ch Swiss National Science Foundation, and the @ethfoundation.bsky.social.
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November 8, 2025 at 1:12 PM
Francois Swiadek, Christian Kraglund Andersen (now professor @tudelft @qutech.bsky.social), Christopher Eichler (now professor FAU Erlangen), @andreasateth.bsky.social supported by IARPA, the @snsf.ch Swiss National Science Foundation, and the @ethfoundation.bsky.social.
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The work was done by Christoph Hellings, Nathan Lacroix (now at Google), Ants Remm (now at @atlanticquantum.bsky.social), Richard Boell, Johannes Herrmann (now at YQuantum), Stefania Lazar (now at Zurich Instruments), Sebastian Krinner (now at Zurich Instruments) ...
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November 8, 2025 at 1:12 PM
The work was done by Christoph Hellings, Nathan Lacroix (now at Google), Ants Remm (now at @atlanticquantum.bsky.social), Richard Boell, Johannes Herrmann (now at YQuantum), Stefania Lazar (now at Zurich Instruments), Sebastian Krinner (now at Zurich Instruments) ...
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Check out our newest paper "Calibrating magnetic flux control in superconducting circuits by compensating distortions on timescales from nanoseconds up to tens of microseconds" published in the @apsphysics.bsky.social
journal @physrevresearch.bsky.social 7, 043142 (2025).
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journal @physrevresearch.bsky.social 7, 043142 (2025).
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November 8, 2025 at 1:12 PM
Check out our newest paper "Calibrating magnetic flux control in superconducting circuits by compensating distortions on timescales from nanoseconds up to tens of microseconds" published in the @apsphysics.bsky.social
journal @physrevresearch.bsky.social 7, 043142 (2025).
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journal @physrevresearch.bsky.social 7, 043142 (2025).
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... control the qubit transition frequency on time scales ranging from nano- to microseconds.
Also make sure that there are no bias-tees in your circuit that have a non-linearity, observable as a power-dependence of the response function, which may hamper your efforts.
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Also make sure that there are no bias-tees in your circuit that have a non-linearity, observable as a power-dependence of the response function, which may hamper your efforts.
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November 8, 2025 at 1:12 PM
... control the qubit transition frequency on time scales ranging from nano- to microseconds.
Also make sure that there are no bias-tees in your circuit that have a non-linearity, observable as a power-dependence of the response function, which may hamper your efforts.
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Also make sure that there are no bias-tees in your circuit that have a non-linearity, observable as a power-dependence of the response function, which may hamper your efforts.
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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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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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October 4, 2025 at 3:18 PM
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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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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Read more here in this @PhysRevLett 125, 260502 (2020): journals.aps.org/prl/abstract... .
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October 4, 2025 at 3:18 PM
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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Read more here in this @PhysRevLett 125, 260502 (2020): journals.aps.org/prl/abstract... .
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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?
... 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.
and much more ...
The page will continue to be updated throughout the next weeks.
September 14, 2025 at 6:59 PM
... 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.
and much more ...
The page will continue to be updated throughout the next weeks.
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 ...
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.
August 30, 2025 at 2:32 PM
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.
... 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,
August 30, 2025 at 2:32 PM
... 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,
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 ...
August 30, 2025 at 2:32 PM
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 ...
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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August 21, 2025 at 8:47 PM
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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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?
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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Department of Physics, Department of Information Technology and Electrical Engineering, @ethz.ch, Quantum Center, ETH Zurich, Quantum Engineering Commission
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August 9, 2025 at 7:39 AM
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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Department of Physics, Department of Information Technology and Electrical Engineering, @ethz.ch, Quantum Center, ETH Zurich, Quantum Engineering Commission
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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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Check out the doctoral hat made by our team at the Quantum Device Lab and the ETH Zürich - @psich.bsky.social Paul Scherrer Institute Quantum Computing Hub.
Thanks to Quentin Ficheux from @cnrs.fr for being his co-adviser and co-examiner on the defense and Leonardo Degiorgi for chairing the exam.
Thanks to Quentin Ficheux from @cnrs.fr for being his co-adviser and co-examiner on the defense and Leonardo Degiorgi for chairing the exam.
August 1, 2025 at 7:43 AM
Check out the doctoral hat made by our team at the Quantum Device Lab and the ETH Zürich - @psich.bsky.social Paul Scherrer Institute Quantum Computing Hub.
Thanks to Quentin Ficheux from @cnrs.fr for being his co-adviser and co-examiner on the defense and Leonardo Degiorgi for chairing the exam.
Thanks to Quentin Ficheux from @cnrs.fr for being his co-adviser and co-examiner on the defense and Leonardo Degiorgi for chairing the exam.
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
Thanks to Alexandre Blais from Institut quantique - Université de Sherbrooke for being his co-adviser and co-examiner on the defense and Leonardo Degiorgi for chairing the exam.
July 30, 2025 at 6:32 AM
Thanks to Alexandre Blais from Institut quantique - Université de Sherbrooke for being his co-adviser and co-examiner on the defense and Leonardo Degiorgi for chairing the exam.
Check out the doctoral hat made by our team at the Quantum Device Lab, the @ethz.ch - @psich.bsky.social Paul Scherrer Institut Quantum Computing Hub, which are part of the Quantum Center at ETH Zurich.
July 30, 2025 at 6:32 AM
Check out the doctoral hat made by our team at the Quantum Device Lab, the @ethz.ch - @psich.bsky.social Paul Scherrer Institut Quantum Computing Hub, which are part of the Quantum Center at ETH Zurich.
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