Sebastian Deffner
@quthermo.bsky.social
Father of twins, theoretical physicist, quantum thermodynamicist;
Thermodynamics and control of information in complex quantum systems.
quthermo.umbc.edu
Thermodynamics and control of information in complex quantum systems.
quthermo.umbc.edu
Pinned
Apply - Interfolio
{{$ctrl.$state.data.pageTitle}} - Apply - Interfolio
apply.interfolio.com
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
apply.interfolio.com/172719
Reposted by Sebastian Deffner
Yup! 75% of us are considering leaving (/made plans to leave/already left) 😢 🧪
www.pbs.org/newshour/sho...
www.pbs.org/newshour/sho...
Top researchers consider leaving U.S. amid funding cuts: 'The science world is ending'
A poll from the journal Nature found that 75% of researchers in the U.S. are considering leaving the country. That includes a man who’s been dubbed the "Mozart of Math." Stephanie Sy examines what’s b...
www.pbs.org
November 2, 2025 at 3:45 AM
Yup! 75% of us are considering leaving (/made plans to leave/already left) 😢 🧪
www.pbs.org/newshour/sho...
www.pbs.org/newshour/sho...
Quantum Science Institute @umbc.bsky.social representation at the Quantum Leap Career Nexus!
October 28, 2025 at 6:31 PM
Quantum Science Institute @umbc.bsky.social representation at the Quantum Leap Career Nexus!
Reposted by Sebastian Deffner
This is a manuscript I am particularly happy with. It concerns topics I have been working on for my PhD, entanglement theory, going back to the work of Bennett et al. Yet it still has a fresh flavour, relating the subject to modern developments in quantum computing.
www.nature.com/articles/s41...
www.nature.com/articles/s41...
October 22, 2025 at 11:58 AM
This is a manuscript I am particularly happy with. It concerns topics I have been working on for my PhD, entanglement theory, going back to the work of Bennett et al. Yet it still has a fresh flavour, relating the subject to modern developments in quantum computing.
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Train scheduling goes quantum feat. Dr. Emery Doucet and Reece Robertson:
www.youtube.com/watch?v=xWKR...
www.nature.com/articles/s41...
www.youtube.com/watch?v=xWKR...
www.nature.com/articles/s41...
Quantum on Track: Quantum Computing for Urban Train Scheduling
YouTube video by UMBCtube
www.youtube.com
October 21, 2025 at 4:58 PM
Train scheduling goes quantum feat. Dr. Emery Doucet and Reece Robertson:
www.youtube.com/watch?v=xWKR...
www.nature.com/articles/s41...
www.youtube.com/watch?v=xWKR...
www.nature.com/articles/s41...
Apply - Interfolio
{{$ctrl.$state.data.pageTitle}} - Apply - Interfolio
apply.interfolio.com
October 21, 2025 at 12:53 PM
Couldn’t agree more!
Is it just me that finds it weird how ingrained it is in science that research groups identify as "The PI's-last-name group" as if their research & research interests were entirely determined by the PI? To me this feels unnecessarily adhering to authority and fostering cults centered around PIs.
October 16, 2025 at 11:29 AM
Couldn’t agree more!
New preprint: Metrological approach to the emergence of classical objectivity
Anthony Kiely, Diana A. Chisholm, Akram Touil, Sebastian Deffner, Gabriel Landi, and Steve Campbell
arxiv.org/abs/2510.12313
Anthony Kiely, Diana A. Chisholm, Akram Touil, Sebastian Deffner, Gabriel Landi, and Steve Campbell
arxiv.org/abs/2510.12313
Metrological approach to the emergence of classical objectivity
We present a precise characterization of the onset of classicality that combines the formalism of quantum Darwinism with the tools from quantum metrology. We show that the quantum Fisher information p...
arxiv.org
October 15, 2025 at 5:44 PM
New preprint: Metrological approach to the emergence of classical objectivity
Anthony Kiely, Diana A. Chisholm, Akram Touil, Sebastian Deffner, Gabriel Landi, and Steve Campbell
arxiv.org/abs/2510.12313
Anthony Kiely, Diana A. Chisholm, Akram Touil, Sebastian Deffner, Gabriel Landi, and Steve Campbell
arxiv.org/abs/2510.12313
New letter in Quantum Science and Technology @iopp-quantum.bsky.social with Josey Stevens:
iopscience.iop.org/article/10.1...
iopscience.iop.org/article/10.1...
Hamiltonian quantum gates-energetic advantage from entangleability - IOPscience
Hamiltonian quantum gates-energetic advantage from entangleability, Stevens, Josey, Deffner, Sebastian
iopscience.iop.org
October 14, 2025 at 4:26 PM
New letter in Quantum Science and Technology @iopp-quantum.bsky.social with Josey Stevens:
iopscience.iop.org/article/10.1...
iopscience.iop.org/article/10.1...
Reposted by Sebastian Deffner
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
go.nature.com/46AqorN
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.
go.nature.com
September 9, 2025 at 11:36 AM
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
go.nature.com/46AqorN
Suppressing excitations in the nonlinear Landau-Zener model
doi.org/10.1209/0295... via @ioppublishing.bsky.social
doi.org/10.1209/0295... via @ioppublishing.bsky.social
Suppressing excitations in the nonlinear Landau-Zener model - IOPscience
Suppressing excitations in the nonlinear Landau-Zener model, Deffner, Sebastian, Campbell, Steve
doi.org
September 8, 2025 at 10:49 PM
Suppressing excitations in the nonlinear Landau-Zener model
doi.org/10.1209/0295... via @ioppublishing.bsky.social
doi.org/10.1209/0295... via @ioppublishing.bsky.social
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
apply.interfolio.com/172719
Apply - Interfolio
{{$ctrl.$state.data.pageTitle}} - Apply - Interfolio
apply.interfolio.com
September 2, 2025 at 4:29 PM
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
apply.interfolio.com/172719
News: opening in my group for a Postdoc coming soon. Research: quantum information scrambling.
August 29, 2025 at 5:56 PM
News: opening in my group for a Postdoc coming soon. Research: quantum information scrambling.
Reposted by Sebastian Deffner
Join us! Submit your nominations by September 1st.
Details 👇
Details 👇
📩 𝐍𝐨𝐦𝐢𝐧𝐚𝐭𝐢𝐨𝐧𝐬 𝐨𝐩𝐞𝐧 𝐟𝐨𝐫 𝐞𝐱𝐞𝐜𝐮𝐭𝐢𝐯𝐞 𝐦𝐞𝐦𝐛𝐞𝐫 𝐩𝐨𝐬𝐢𝐭𝐢𝐨𝐧𝐬!
We seek a range of volunteers from all career stages to run for executive committee positions in the Fall elections: 𝐂𝐡𝐚𝐢𝐫-𝐥𝐢𝐧𝐞 (2), 𝐝𝐢𝐯𝐢𝐬𝐢𝐨𝐧 𝐂𝐨𝐮𝐧𝐜𝐢𝐥𝐨𝐫 (2), 𝐌𝐞𝐦𝐛𝐞𝐫-𝐚𝐭-𝐋𝐚𝐫𝐠𝐞 (4), and 𝐄𝐚𝐫𝐥𝐲 𝐂𝐚𝐫𝐞𝐞𝐫 𝐌𝐞𝐦𝐛𝐞𝐫-𝐚𝐭-𝐋𝐚𝐫𝐠𝐞 (2, only grad students and postdocs).
We seek a range of volunteers from all career stages to run for executive committee positions in the Fall elections: 𝐂𝐡𝐚𝐢𝐫-𝐥𝐢𝐧𝐞 (2), 𝐝𝐢𝐯𝐢𝐬𝐢𝐨𝐧 𝐂𝐨𝐮𝐧𝐜𝐢𝐥𝐨𝐫 (2), 𝐌𝐞𝐦𝐛𝐞𝐫-𝐚𝐭-𝐋𝐚𝐫𝐠𝐞 (4), and 𝐄𝐚𝐫𝐥𝐲 𝐂𝐚𝐫𝐞𝐞𝐫 𝐌𝐞𝐦𝐛𝐞𝐫-𝐚𝐭-𝐋𝐚𝐫𝐠𝐞 (2, only grad students and postdocs).
August 23, 2025 at 9:54 AM
Join us! Submit your nominations by September 1st.
Details 👇
Details 👇
Reposted by Sebastian Deffner
A wonderful opportunity for ECRs! The call for the dissertation award is closing soon!
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.
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.
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.
aps.org
August 23, 2025 at 9:55 AM
A wonderful opportunity for ECRs! The call for the dissertation award is closing soon!
Editorial in @physreve.bsky.social celebrating the transition of G ---> D @aps-dsnp.bsky.social
journals.aps.org/pre/abstract...
journals.aps.org/pre/abstract...
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.
journals.aps.org
August 13, 2025 at 6:54 PM
Editorial in @physreve.bsky.social celebrating the transition of G ---> D @aps-dsnp.bsky.social
journals.aps.org/pre/abstract...
journals.aps.org/pre/abstract...
On the Baltimore Light RailLink into the quantum future
Krzysztof Domino, Emery Doucet, Reece Robertson, Bartłomiej Gardas & Sebastian Deffner
www.nature.com/articles/s41...
Krzysztof Domino, Emery Doucet, Reece Robertson, Bartłomiej Gardas & Sebastian Deffner
www.nature.com/articles/s41...
On the Baltimore Light RailLink into the quantum future - Scientific Reports
Scientific Reports - On the Baltimore Light RailLink into the quantum future
www.nature.com
August 13, 2025 at 1:40 PM
On the Baltimore Light RailLink into the quantum future
Krzysztof Domino, Emery Doucet, Reece Robertson, Bartłomiej Gardas & Sebastian Deffner
www.nature.com/articles/s41...
Krzysztof Domino, Emery Doucet, Reece Robertson, Bartłomiej Gardas & Sebastian Deffner
www.nature.com/articles/s41...
Reposted by Sebastian Deffner
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.
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.
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.
aps.org
July 30, 2025 at 12:26 PM
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.
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.
Reposted by Sebastian Deffner
📢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
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
July 7, 2025 at 4:01 PM
📢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
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
Reposted by Sebastian Deffner
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.
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.
July 2, 2025 at 11:24 AM
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.
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.
Reposted by Sebastian Deffner
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!
iopscience.iop.org/article/10.1...
Great collaboration with Sebastian Denver (@quthermo.bsky.social), Paola Cappellaro, Kenji Maeda, and Akram Touil! Happy Reading!
https://iopscience.iop.org/article/10.108…
June 29, 2025 at 6:19 PM
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!
iopscience.iop.org/article/10.1...
Great collaboration with Sebastian Denver (@quthermo.bsky.social), Paola Cappellaro, Kenji Maeda, and Akram Touil! Happy Reading!
Reposted by Sebastian Deffner
Still accepting postdoc applications!
Postdoc opportunity!
Join us in heavenly Vancouver (Canada) to develop fundamental nonequilibrium stat mech, thermo, and info theory applied to biomolecular machines and in close collaboration with experiment.
Details: www.sfu.ca/physics/siva...
Join us in heavenly Vancouver (Canada) to develop fundamental nonequilibrium stat mech, thermo, and info theory applied to biomolecular machines and in close collaboration with experiment.
Details: www.sfu.ca/physics/siva...
Postdoc Ad
www.sfu.ca
June 24, 2025 at 4:56 PM
Still accepting postdoc applications!