Marcus Huber
entangledanarchist.bsky.social
Marcus Huber
@entangledanarchist.bsky.social
Reposted by Marcus Huber
Very happy to see our latest work out in PRL doi.org/10.1103/5rtj... and highlighted by both @apsphysics.bsky.social Physics and @physicsworld.bsky.social
Small thread below 🧵⬇️
Quantum fluctuations produce no entropy, so if you can count those fluctuations as clock “ticks”, you can make a clock with no entropy and nonzero precision. Or can you? New research hints at why there is (still) no free lunch, even in the #quantum world. ⚛️🧪 physicsworld.com/a/researcher...
Researchers pin down the true cost of precision in quantum clocks – Physics World
Trade-off between precision and entropy production lies in measurement process
physicsworld.com
November 16, 2025 at 5:06 PM
Reposted by Marcus Huber
"40h pro Woche arbeiten. Das ist doch weniger als ein Viertel! Da geht doch mehr!"
Man hört das Argument von Wirtschaftstreibenden, jetzt auch vom deutschen Kanzler. Das Missverständnis dahinter: Viel arbeiten ist in erster Linie ein Privileg - das für viele einfach außer Reichweite liegt (Thread)
September 3, 2025 at 10:31 AM
Reposted by Marcus Huber
What started as informal discussions on the Danube beach in Vienna during QTD2023 has been published at last. Trying to come up with an experimentally feasible quantum clock we came across a rich model – the ring clock – that overturned a common wisdom in the community. doi.org/10.1038/s415...
June 2, 2025 at 10:44 AM
Reposted by Marcus Huber
🔥 🕰️ Read our new paper on the thermodynamics of clocks 🔥🕰️https://arxiv.org/abs/2502.00096 @mitchison.bsky.social @entangledanarchist.bsky.social
Entropic costs of the quantum-to-classical transition in a microscopic clock
We experimentally realize a quantum clock by using a charge sensor to count charges tunneling through a double quantum dot (DQD). Individual tunneling events are used as the clock's ticks. We quantify...
arxiv.org
February 4, 2025 at 5:47 PM
Reposted by Marcus Huber
Now that our recent work on the emergence of a 2nd law of thermodynamics in isolated quantum systems has been published, I thought it may be a good opportunity to share some animations outlining the intuition for the principle behind it.

doi.org/10.1103/PRXQ...

See thread below 👇
January 16, 2025 at 5:38 AM
Reposted by Marcus Huber
This is now out in the journal Physical Review X Quantum! Super excited to be able to share this piece of work with everyone. I'm incredibly proud of it journals.aps.org/prxquantum/a...
January 14, 2025 at 3:52 PM
Reposted by Marcus Huber
New preprint! Here QuITters Pharnam and Fabien look at optimal quantum thermodynamic resource costs for state transformation processes such as ground state cooling: arxiv.org/abs/2412.07291
Optimal unitary trajectories under commuting target and cost observables; applications to cooling
The preparation of quantum states, especially cooling, is a fundamental technology for nanoscale devices. The past decade has seen important results related to both the limits of state transformation ...
arxiv.org
December 11, 2024 at 1:04 PM
Reposted by Marcus Huber
Cool article and video from ORF talking about our work in free-space quantum key distribution (auf Deutsch!)
noe.orf.at/stories/3280...
Physiker forschen an Super-Verschlüsselung
Eine abhörsichere Kommunikation wollen Quantenphysiker der TU Wien in einem Bundesländer übergreifenden Experiment erschaffen. Dabei schicken sie verschränkte Photonenpaare von Wien zum Bisamberg (Bez...
noe.orf.at
November 26, 2024 at 7:56 AM
Reposted by Marcus Huber
In addition to research work, many members of our team do outreach and science communication. Here's a new article by QuITter Phila for the FWF on how quantum technology is being used in an ESA mission to Jupiter! (Also available in English)
scilog.fwf.ac.at/magazin/jupi...
Jupitersonde „Juice“ sucht mit österreichischem Quantensensor nach den Voraussetzungen für Leben
Grazer Forschende haben einen Magnetfeldsensor entwickelt, der mithilfe der Quantenphysik kleinste Felder vermessen kann. Dieser ist nun auf dem Weg zum Jupiter, um dort beim Aufspüren von Wasser zu h...
scilog.fwf.ac.at
November 18, 2024 at 3:22 PM
Reposted by Marcus Huber
Hello science/physics/quantum blueskyers! We're the theory division of TU Wien's Atominstitut in Vienna.

We do Quantum Information and Thermodynamics, as well as Q. foundations, computing, optics, many-body physics & more! Looking forward to connecting with other keen physics nerds here 🤓🧑‍🔬👩🏽‍🔬⚛️
November 18, 2024 at 12:42 PM