Sebastian Deffner's Avatar

Sebastian Deffner

@quthermo.bsky.social

Father of twins, theoretical physicist, quantum thermodynamicist; Thermodynamics and control of information in complex quantum systems. quthermo.umbc.edu

192 Followers  |  308 Following  |  27 Posts  |  Joined: 15.12.2024  |  1.8052

Latest posts by quthermo.bsky.social on Bluesky

Post image 07.10.2025 10:41 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Quantum On Track: UMBC Researchers Demonstrate Feasibility Of Using Quantum Devices To Manage Urban Train Scheduling, Using A Baltimore Transit Line As A Model A new study led by UMBC researchersβ€”and focused on Baltimore’s Light RailLink, a hybrid tram-rail network sharing roads with cars inside Baltimore Cityβ€”harnesses quantum computing to address the chall...

umbc.edu/stories/quan...

17.09.2025 14:58 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Congratulations Dr. Son!

09.09.2025 22:32 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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These nations are wooing PhD students amid US funding uncertainties Pauses to some US graduate programmes have led universities in several countries to launch initiatives to entice would-be PhD students.

Pauses to some US graduate programmes have led universities in several countries to launch initiatives to entice would-be PhD students

go.nature.com/46AqorN

09.09.2025 11:36 β€” πŸ‘ 47    πŸ” 22    πŸ’¬ 0    πŸ“Œ 4
Suppressing excitations in the nonlinear Landau-Zener model - IOPscience Suppressing excitations in the nonlinear Landau-Zener model, Deffner, Sebastian, Campbell, Steve

Suppressing excitations in the nonlinear Landau-Zener model
doi.org/10.1209/0295... via @ioppublishing.bsky.social

08.09.2025 22:49 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Apply - Interfolio {{$ctrl.$state.data.pageTitle}} - Apply - Interfolio

Opening for postdoctoral researcher! Do you have a PhD in Theoretical Physics? Are you interested to work with me on quantum information scrambling? Then this position might be for you:

apply.interfolio.com/172719

02.09.2025 16:29 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

News: opening in my group for a Postdoc coming soon. Research: quantum information scrambling.

29.08.2025 17:56 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

Join us! Submit your nominations by September 1st.
Details πŸ‘‡

23.08.2025 09:54 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

A wonderful opportunity for ECRs! The call for the dissertation award is closing soon!

23.08.2025 09:55 β€” πŸ‘ 0    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
Editorial: Statistical and Nonlinear Physics Crosses a Threshold The leadership of APS Division of Statistical and Nonlinear Physics celebrates its division status and reflects on the state of the art.

Editorial in @physreve.bsky.social celebrating the transition of G ---> D @aps-dsnp.bsky.social

journals.aps.org/pre/abstract...

13.08.2025 18:54 β€” πŸ‘ 0    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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On the Baltimore Light RailLink into the quantum future - Scientific Reports Scientific Reports - On the Baltimore Light RailLink into the quantum future

On the Baltimore Light RailLink into the quantum future

Krzysztof Domino, Emery Doucet, Reece Robertson, BartΕ‚omiej Gardas & Sebastian Deffner

www.nature.com/articles/s41...

13.08.2025 13:40 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Dissertation Award in Statistical and Nonlinear Physics The American Physical Society is a nonprofit membership organization working to advance physics by fostering a vibrant, inclusive, and global community dedicated to science and society.

Applications for the DSNP 2025 Dissertation Award are open until September 1st, 2025!
Apply here aps.org/funding-reco...
The award consists of $2,000, travel reimbursement, and a registration waiver to attend the next APS Global Summit as an invited speaker. Read more below.

30.07.2025 12:26 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 1    πŸ“Œ 1

Very first article of my undergrad (!!) student Greg:

www.mdpi.com/1099-4300/27...

29.07.2025 09:29 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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πŸ“’July 8, 2025 | 12:00 PM ET
The APS DSNP klogW future Zoom Seminar series is pleased to present two exciting talks by student award winners: Jacob Zavatone-Veth and Andrew Pyo
Details and registration: engage.aps.org/dsnp/resourc...
@apsphysics.bsky.social

07.07.2025 16:01 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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Introducing the DSNP the Early-Career Spotlight!
ECS highlights early-career researchers, showcasing fresh perspectives in our field.
We're excited to kick off with Nidhi Pashine, a new PI at Syracuse University whose research focuses on metamaterials.

Know someone we should feature? DM us here.

02.07.2025 11:24 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0

Our paper "No-go theorem for environment-assisted invariance in non-unitary dynamics" is now published on New Journal of Physics!
iopscience.iop.org/article/10.1...
Great collaboration with Sebastian Denver (@quthermo.bsky.social), Paola Cappellaro, Kenji Maeda, and Akram Touil! Happy Reading!

29.06.2025 18:19 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

Still accepting postdoc applications!

24.06.2025 16:56 β€” πŸ‘ 3    πŸ” 3    πŸ’¬ 0    πŸ“Œ 0
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Endoreversible Stirling cycles: plasma engines at maximal power Endoreversible engine cycles are a cornerstone of finite-time thermodynamics. We show that endoreversible Stirling engines operating with a one-component plasma as working medium run at maximal power ...

First paper by my undergrad researcher Greg Behrendt:

arxiv.org/abs/2506.16303

23.06.2025 01:57 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Want to Suggest a Focus Topic or Invited Symposia aligned with @aps-dsnp.bsky.social at the next @apsphysics.bsky.social Global Summit? A successful proposal must include a description of why the topic of the session is interesting to the DSNP community and why it is timely.
πŸ—“οΈDeadline: June 30, 2025

21.06.2025 16:52 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0

First paper of my graduate student Reece Robertson, first paper of my collaborator Ernest Spicer, guided and supervised by my postdoc Dr. Emery Doucet.

www.mdpi.com/1099-4300/27...

20.06.2025 17:32 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Suppressing excitations in the nonlinear Landau-Zener model Many complex quantum systems can be described by effectively nonlinear dynamics. While such dynamics have many appealing characteristics, they also make the analysis significantly more involved. This ...

New preprint with Steve Campbell:

arxiv.org/abs/2506.11759

16.06.2025 13:36 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Multiparameter optimal control of ${\mathrm{F}}_{1}$-ATPase Biological molecular machines convert free energy between different forms in cells, often at high efficiency. Optimal control theory provides a framework to elucidate design principles governing energ...

Fun new paper by Callum @sfuphysics.bsky.social, on energetically efficient multi-parameter driving of our favorite molecular motor (shout out F1!).
doi.org/10.1103/bm3d...

11.06.2025 14:34 β€” πŸ‘ 3    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0

G --> D!!! We made it.

10.06.2025 17:11 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Quantum Reign- Quantum Computing through AR education Learn Quantum Computing through AR education and immersive comic experiences to ready yourself for the quantum workforce.

Check out our new idea for how to bring quantum education to everyone:

www.kickstarter.com/projects/sag...

05.06.2025 16:50 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
Compatibility of quantum measurements and the emergence of classical objectivity The study of measurements in quantum mechanics exposes many of the ways in which the quantum world is different. For example, one of the hallmarks of quantum mechanics is that observables may be incom...

I am super happy to be published (it is not my work, by the way) as I find it to be a very interesting entry point into the connection between KD quasiprobability and the emergence of classical objectivity from the perspective of Darwinism.

#QuantumInformation

journals.aps.org/pra/abstract...

29.04.2025 13:17 β€” πŸ‘ 5    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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Emergence of $X$ states in a quantum impurity model Through a local (and simple) manipulation of a many-body system, this work shows that it is possible to store and trap genuine quantum information and energy in its collective localized edge modes. Th...

New letter in Physical Review Research:

journals.aps.org/prresearch/a...

02.05.2025 15:27 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Compatibility of quantum measurements and the emergence of classical objectivity The study of measurements in quantum mechanics exposes many of the ways in which the quantum world is different. For example, one of the hallmarks of quantum mechanics is that observables may be incom...

New article in Physical Review A

journals.aps.org/pra/abstract...

02.05.2025 15:26 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Details | Postdoctoral Associate - Computer Science | Careers | Division of Human Resources | Virginia Tech

I'm hiring a postdoc! If you'd like to work with me on quantum learning, error correction, quantum algorithms, and FTQC at Virginia Tech in the Washington, DC metro area, please apply here: careers.pageuppeople.com/968/cw/en-us...

28.04.2025 19:43 β€” πŸ‘ 34    πŸ” 13    πŸ’¬ 0    πŸ“Œ 0

100!

15.04.2025 18:36 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Happy World Quantum Day!!

14.04.2025 12:12 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

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