Simon Krekels
@krekels.io
🔗 simon.krekels.io
Physics PhD student @KU Leuven & imec
Also a map nerd 🗺️
Physics PhD student @KU Leuven & imec
Also a map nerd 🗺️
Our paper on the self-consistent theory of Josephson junctions has now been published in Phys. Rev. B!
🔗 journals.aps.org/prb/abstract...
Many thanks to my co-authors Vukan Levajac, Kristof Moors, George Simion, and Bart Sorée!
P.S. below you can check out some of the key figures from the paper 🤓
🔗 journals.aps.org/prb/abstract...
Many thanks to my co-authors Vukan Levajac, Kristof Moors, George Simion, and Bart Sorée!
P.S. below you can check out some of the key figures from the paper 🤓
![CPRs for junctions transitioning from the short junction (d < ξ) to the long junction regime (d > ξ); ξ ≈ 10 sites. (a) CPRs for the phase-gradient and fixed-phase methods. (b) The evolution of the CPR maximum δφmax with junction length. The colored dots represent
numerical results, and the solid and dashed black lines derive from Refs. [40] and [31] respectively. (c) The maximal values reached by the
CPRs plotted against the junction length. The phase-gradient and fixed-phase methods agree remarkably well despite their difference in shape.](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:gclhzvrd4l7lqr5zhwqhtbqo/bafkreif6bnaomneug275z7mnkd3cz2fkwac2bqrumgt63jd6q2cumfcn6e@jpeg)
October 15, 2025 at 9:13 AM
Our paper on the self-consistent theory of Josephson junctions has now been published in Phys. Rev. B!
🔗 journals.aps.org/prb/abstract...
Many thanks to my co-authors Vukan Levajac, Kristof Moors, George Simion, and Bart Sorée!
P.S. below you can check out some of the key figures from the paper 🤓
🔗 journals.aps.org/prb/abstract...
Many thanks to my co-authors Vukan Levajac, Kristof Moors, George Simion, and Bart Sorée!
P.S. below you can check out some of the key figures from the paper 🤓
Reposted by Simon Krekels
Reposted by Simon Krekels
Interesting bit of sociology: They are really studiously avoiding any mention of quantum computing. First and only mention came in the last few words of the presentation by Johansson.
October 7, 2025 at 10:03 AM
Interesting bit of sociology: They are really studiously avoiding any mention of quantum computing. First and only mention came in the last few words of the presentation by Johansson.
Reposted by Simon Krekels
All was now a phrensy.
June 30, 2025 at 4:47 PM
All was now a phrensy.
The Vicsek model beautifully illustrates how simple interactions can lead to complex behaviour.
Simulating these kinds of things is a lot of fun, and a great way to teach students programming!
Simulating these kinds of things is a lot of fun, and a great way to teach students programming!
May 25, 2025 at 10:28 AM
The Vicsek model beautifully illustrates how simple interactions can lead to complex behaviour.
Simulating these kinds of things is a lot of fun, and a great way to teach students programming!
Simulating these kinds of things is a lot of fun, and a great way to teach students programming!
New preprint! We introduce a current-conserving treatment of Josephson junctions in BdG, and find strongly modified CPRs in some cases. Check it out!
Simon Krekels, Vukan Levajac, Kristof Moors, George Simion, Bart Sor\'ee: Current Conservation in the Self-Consistent Josephson Junction https://arxiv.org/abs/2505.09288 https://arxiv.org/pdf/2505.09288 https://arxiv.org/html/2505.09288
May 15, 2025 at 7:04 AM
New preprint! We introduce a current-conserving treatment of Josephson junctions in BdG, and find strongly modified CPRs in some cases. Check it out!
Reposted by Simon Krekels
Simon Krekels, Vukan Levajac, Kristof Moors, George Simion, Bart Sor\'ee: Current Conservation in the Self-Consistent Josephson Junction https://arxiv.org/abs/2505.09288 https://arxiv.org/pdf/2505.09288 https://arxiv.org/html/2505.09288
May 15, 2025 at 6:09 AM
Simon Krekels, Vukan Levajac, Kristof Moors, George Simion, Bart Sor\'ee: Current Conservation in the Self-Consistent Josephson Junction https://arxiv.org/abs/2505.09288 https://arxiv.org/pdf/2505.09288 https://arxiv.org/html/2505.09288
Everybody loves transmons
March 20, 2025 at 4:22 AM
Everybody loves transmons
I'm tired of people trying to be smart about "the Nobel prize in physics going to AI".
Those interested in learning about the physics that went (and still goes) into developing AI can listen to this excellent talk by @ecarlon.bsky.social:
fys.kuleuven.be/english/coll...
Those interested in learning about the physics that went (and still goes) into developing AI can listen to this excellent talk by @ecarlon.bsky.social:
fys.kuleuven.be/english/coll...
Colloquium 27 November 2024, 2 pm - Physics meets Computer Science
fys.kuleuven.be
November 30, 2024 at 9:30 AM
I'm tired of people trying to be smart about "the Nobel prize in physics going to AI".
Those interested in learning about the physics that went (and still goes) into developing AI can listen to this excellent talk by @ecarlon.bsky.social:
fys.kuleuven.be/english/coll...
Those interested in learning about the physics that went (and still goes) into developing AI can listen to this excellent talk by @ecarlon.bsky.social:
fys.kuleuven.be/english/coll...
This paper was rejected on the spot by the editor of the journal we submitted to, because we didn't mention an almost unrelated paper by one of his collaborators.
November 21, 2024 at 10:28 AM
This paper was rejected on the spot by the editor of the journal we submitted to, because we didn't mention an almost unrelated paper by one of his collaborators.
Big if true
A. Paetznick (Microsoft Azure Quantum), M. P. da Silva (Microsoft Azure Quantum), C. Ryan-Anderson (Quantinuum), J. M. Bello-Rivas (Microsoft Azure Quantu...
Demonstration of logical qubits and repeated error correction with better-than-physical error rates
https://arxiv.org/abs/2404.02280
Demonstration of logical qubits and repeated error correction with better-than-physical error rates
https://arxiv.org/abs/2404.02280
November 19, 2024 at 2:17 PM
Big if true
CEO of a fracking company, really??
November 17, 2024 at 7:34 AM
CEO of a fracking company, really??
Reposted by Simon Krekels
Simon Krekels, Christian Maes, Kasper Meerts, Ward Struyve
Zig-zag dynamics in a Stern-Gerlach spin measurement
https://arxiv.org/abs/2311.13406
Zig-zag dynamics in a Stern-Gerlach spin measurement
https://arxiv.org/abs/2311.13406
February 27, 2024 at 9:10 AM
Simon Krekels, Christian Maes, Kasper Meerts, Ward Struyve
Zig-zag dynamics in a Stern-Gerlach spin measurement
https://arxiv.org/abs/2311.13406
Zig-zag dynamics in a Stern-Gerlach spin measurement
https://arxiv.org/abs/2311.13406
I wonder why nobody is bothered by the fact that they don't know how magnets work. I mean, do *you* know how magnets work?
November 12, 2024 at 1:40 PM
I wonder why nobody is bothered by the fact that they don't know how magnets work. I mean, do *you* know how magnets work?