Philippe Faist
@phfaist.bsky.social
Tenured senior researcher in quantum information at the Freie Universität Berlin (previously: PhD at ETH Zurich & post-doc at IQIM Caltech) https://phfaist.com/
We all have a favorite characterization of the thermal state: as an equilibrium state, via a maximum entropy principle, from the resource theory of thermodynamics, as a step in learning algorithms, among others.
What is the analogous concept for quantum channels?
🎉 We've got an answer! ⚛️ 🧪
👇
What is the analogous concept for quantum channels?
🎉 We've got an answer! ⚛️ 🧪
👇
August 7, 2025 at 10:33 AM
We all have a favorite characterization of the thermal state: as an equilibrium state, via a maximum entropy principle, from the resource theory of thermodynamics, as a step in learning algorithms, among others.
What is the analogous concept for quantum channels?
🎉 We've got an answer! ⚛️ 🧪
👇
What is the analogous concept for quantum channels?
🎉 We've got an answer! ⚛️ 🧪
👇
I’m told the reason they didn’t invite a fifth Nobel prize winner on stage is that they would collapse into a black hole.
June 11, 2025 at 9:19 PM
I’m told the reason they didn’t invite a fifth Nobel prize winner on stage is that they would collapse into a black hole.
Exciting times ahead for the zoo! More info: errorcorrectionzoo.org/c/surface
We’re excited to share updates ensuring the long-term sustainability of the EC Zoo. To continue delivering great content and improving your experience, we’re introducing a new subscription-based model. Check out our website for more detailed information!
April 1, 2025 at 9:13 AM
Exciting times ahead for the zoo! More info: errorcorrectionzoo.org/c/surface
Reposted by Philippe Faist
Major update: The zoo is not just a repository, but also a taxonomy. Now, every code page has a visualization of the code's primary ancestors. 🧵
January 2, 2025 at 10:03 PM
Major update: The zoo is not just a repository, but also a taxonomy. Now, every code page has a visualization of the code's primary ancestors. 🧵
Reposted by Philippe Faist
Submissions for QCTiP 2025 are now open.
December 5, 2024 at 10:45 AM
Submissions for QCTiP 2025 are now open.
Reposted by Philippe Faist
You can now BibTeX the thousands of references mentioned in the zoo!
December 4, 2024 at 3:32 PM
You can now BibTeX the thousands of references mentioned in the zoo!
Reposted by Philippe Faist
Rob Schoelkopf predicts that using dual-rail superconducting qubits (for which most errors are detectable) will reduce the overhead cost of quantum error correction by "orders of magnitude."
podcast.the-new-quantum-era.com/41
podcast.the-new-quantum-era.com/41
The New Quantum Era | Dual-rail superconducting qubits with Rob Schoelkopf
Welcome to another episode of The New Quantum Era, hosted by Sebastian Hassinger and Kevin Rowney. Today, we have the privilege of speaking with Dr. Robert Schoelkopf, Sterling Professor of Applied...
podcast.the-new-quantum-era.com
November 23, 2024 at 12:57 AM
Rob Schoelkopf predicts that using dual-rail superconducting qubits (for which most errors are detectable) will reduce the overhead cost of quantum error correction by "orders of magnitude."
podcast.the-new-quantum-era.com/41
podcast.the-new-quantum-era.com/41
Optimist: Cup is half full
Pessimist: Cup is half empty
Quantum information theorist: there is a larger Hilbert space containing a qubit which the cup is maximally entangled with
Pessimist: Cup is half empty
Quantum information theorist: there is a larger Hilbert space containing a qubit which the cup is maximally entangled with
Optimist: The cup is half full
Pessimist: The cup is half empty
LaTeX user: The whole spacing and size are wrong, you should have been using \bigcup
Pessimist: The cup is half empty
LaTeX user: The whole spacing and size are wrong, you should have been using \bigcup
Optimist: The cup is half full
Pessimist: The cup is half empty
STS researcher: The cup is an affordance
Pessimist: The cup is half empty
STS researcher: The cup is an affordance
November 23, 2024 at 10:05 PM
Optimist: Cup is half full
Pessimist: Cup is half empty
Quantum information theorist: there is a larger Hilbert space containing a qubit which the cup is maximally entangled with
Pessimist: Cup is half empty
Quantum information theorist: there is a larger Hilbert space containing a qubit which the cup is maximally entangled with
Being surrounded by incredibly skilled and likable scientists produces the extraordinarily stimulating environment I experienced at IQIM. Congratulations John for a well-deserved recognition and for cultivating this magical place. quantumfrontiers.com/2024/02/19/a...
February 20, 2024 at 3:18 PM
Being surrounded by incredibly skilled and likable scientists produces the extraordinarily stimulating environment I experienced at IQIM. Congratulations John for a well-deserved recognition and for cultivating this magical place. quantumfrontiers.com/2024/02/19/a...
Hard to think of a better place than pretty Les Diablerets to discuss quantum metrology with other metrology enthusiasts!
February 15, 2024 at 10:24 AM
Hard to think of a better place than pretty Les Diablerets to discuss quantum metrology with other metrology enthusiasts!
This one has been a long time in the making, and I'm happy to finally see it out. Thanks to my collaborators for their patience - Mischa Woods, @vva.bsky.social, Joe Renes, @jenseisert.bsky.social, & @preskill.bsky.social . journals.aps.org/prxquantum/a...
Time-Energy Uncertainty Relation for Noisy Quantum Metrology
The impact of noise on the accuracy of a quantum clock is investigated, unveiling a necessary and sufficient requirement for accuracy that extends standard error-correcting conditions to quantum metro...
journals.aps.org
December 5, 2023 at 10:29 PM
This one has been a long time in the making, and I'm happy to finally see it out. Thanks to my collaborators for their patience - Mischa Woods, @vva.bsky.social, Joe Renes, @jenseisert.bsky.social, & @preskill.bsky.social . journals.aps.org/prxquantum/a...
Reposted by Philippe Faist
Recorded talks for the Sixth International Conference on Quantum Error Correction #QEC23 are now freely available! www.youtube.com/channel/UC1t...
QEC23
Talks from QEC23 - 6th International Conference on Quantum Error Correction, Sydney
www.youtube.com
November 13, 2023 at 2:11 AM
Recorded talks for the Sixth International Conference on Quantum Error Correction #QEC23 are now freely available! www.youtube.com/channel/UC1t...
Reposted by Philippe Faist
Terrific summary by Earl Campbell of the exciting recent progress in quantum error correction!
www.riverlane.com/blog/qec23-s...
www.riverlane.com/blog/qec23-s...
QEC23: Six key takeaways on the state of quantum error correction - Riverlane
I’ve just got back from QEC23 in Sydney, the leading global conference in Quantum Error Correction (QEC). Phew, what a week. When talking about the conferenc...
www.riverlane.com
November 10, 2023 at 6:03 PM
Terrific summary by Earl Campbell of the exciting recent progress in quantum error correction!
www.riverlane.com/blog/qec23-s...
www.riverlane.com/blog/qec23-s...
Reposted by Philippe Faist
70 years ago, Bryce deWitt forcefully made the case for pursuing a quantum theory of gravity in an essay which won the 1953 GRF essay competition. This year, I wrote an essay exploring the possibility that this may be the wrong direction. It lost. scirate.com/arxiv/2310.1... 1/
Is it time to rethink quantum gravity?
Although it's widely believed that gravity should have a quantum nature like every other force, the conceptual obstacles to constructing a quantum theory of gravity compel us to explore other perspect
scirate.com
October 20, 2023 at 4:37 PM
70 years ago, Bryce deWitt forcefully made the case for pursuing a quantum theory of gravity in an essay which won the 1953 GRF essay competition. This year, I wrote an essay exploring the possibility that this may be the wrong direction. It lost. scirate.com/arxiv/2310.1... 1/
Reposted by Philippe Faist
👋 Anyone need some codes? We've got 566 classical & quantum codes.
October 10, 2023 at 7:49 AM
👋 Anyone need some codes? We've got 566 classical & quantum codes.
Reposted by Philippe Faist
Hey quantum crowd!
I made a quantum feed: bsky.app/profile/did:...
Let me know if you want to be on the list for your quantum posts to be seen there by replying to this post.
Share a link to your personal web page at your quantum lab, company or startup or your google scholar as a credential.
I made a quantum feed: bsky.app/profile/did:...
Let me know if you want to be on the list for your quantum posts to be seen there by replying to this post.
Share a link to your personal web page at your quantum lab, company or startup or your google scholar as a credential.
October 8, 2023 at 7:44 PM
Hey quantum crowd!
I made a quantum feed: bsky.app/profile/did:...
Let me know if you want to be on the list for your quantum posts to be seen there by replying to this post.
Share a link to your personal web page at your quantum lab, company or startup or your google scholar as a credential.
I made a quantum feed: bsky.app/profile/did:...
Let me know if you want to be on the list for your quantum posts to be seen there by replying to this post.
Share a link to your personal web page at your quantum lab, company or startup or your google scholar as a credential.