Sign in

Florian Marquardt

@FMarquardtGroup.fediscience.org.ap.brid.gy
832 followers 29 following 138 posts

Theoretical Physicist at @MPI_ScienceOfLight. This is the account of my research group. Topics include #machinelearning for (#quantum) #physics […] 🌉 bridged from ⁂ fediscience.org/@FMarquardtGroup, follow @ap.brid.gy to interact

PostsRepliesMedia
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 10/10/2026
Blog (from my Mastodon posts): fmarqua.pages.gwdg.de/blog Today I just had Claude help me generate a blog website from my Mastodon posts (it runs a python script that fetches posts and reformats them nicely, pulling together subsequent posts in a […] [Original post on fediscience.org]
Screenshot of a blog landing page.
002 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 12/08/2026
Partial #eclipse in the Swiss mountains near Leukerbad. Phantom image of the eclipsed sun from some optical effect in the iphone camera lens system (anyone understand the raster pattern in the little green phantom image?)
Sun barely above mountain, slightly eclipsed. Green reverted phantom image of same sun below.
020 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 15/07/2026
Our #SciExplorer article is now out ! This #AI agent can explore physical systems from scratch, generating hypotheses, running (numerical) experiments and eventually converging on a model. We tested it on several domains, including mechanical dynamical […] [Original post on fediscience.org]
Image of a head with a neural network inside and pictures of scientific plots arranged around it.
022 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 08/07/2026
Sneak preview: We have not yet announced this publicly in a big way, but you can have a first look at "Safe Lab Agents". Run AI agents safely inside a sandbox and let them interact with your experiment. Easy setup, plus automatic electronic lab notebook […] [Original post on fediscience.org]
A robot inside a bubble, interfacing to an experiment, represented by an oscilloscope.
123 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 02/07/2026
@Marekgluza Great to be at this conference in Aalborg/Denmark and glad we met here and discussed mastodon!
A white seagull is flying above a metal sign reading "REDNINGSPOST," situated near the Aalborg waterfront. The background features a clear blue sky and industrial buildings along the shore.Aalborg bridge
000 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 08/03/2026
@ModernePhysik Den Irrtum zu überwinden ist ein Hauptziel der Wissenschaft. Wir hatten als Mittel dazu schon die Skepsis erwähnt. Eine weitere sehr wichtige Idee ist diese: 2. "Halte alles so einfach wie möglich" Einfache Ansätze sind eher fehlerfrei zu […] [Original post on fediscience.org]
Links: Historische Skizze von William of Ockham. Rechts: William of Ockham (c.1287–1347) ""For nothing ought to be posited without a reason given, unless it is self-evident (literally, known through itself) or known by experience or proved by the authority of Sacred Scripture." -- Also: halte die Erklärungen so einfach wie möglich!
001 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 03/03/2026
Light running in a circle. Live at Pascal del Haye's lab at @MPI_ScienceOfLight #Physics
Screen showing a red spiral, which is a camera picture of an optical resonator in a chip.
041 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 01/03/2026
@ModernePhysik In der Wissenschaft gehört der Irrtum zum Alltag. Deshalb ist es wichtig, die Fähigkeit zu besitzen, Fehler schnell zu erkennen, und die Bereitschaft, Fehler schnell (sich selbst und vor anderen) einzugestehen. Dazu gehört auch, kein negatives […] [Original post on fediscience.org]
Bild und Zitat von René Descartes: "Le premier était de ne recevoir jamais aucune chose pour vraie que je ne la connusse évidemment être telle; c'est-à-dire, d'éviter soigneusement la précipitation et la prévention, …" Discours de la méthode, 1637
014 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 22/02/2026
@ModernePhysik Jeder Mensch, der Wissenschaft betreibt, kennt die zahlreichen Arten von Irrtümern, die praktisch täglich passieren (Rechenfehler, Logikfehler, falsche Grundannahmen, Fehler im Aufbau und in der Interpretation von Experimenten, ...). Meistens […] [Original post on fediscience.org]
Titelseite des Buches "Rayons N" von R. Blondlot, 1904.
101 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 21/02/2026
Viele Menschen denken bei Wissenschaft an komplizierte Apparate, Formeln, oder Leute in Reinraumanzügen. Aber das sind nur oberflächliche Aspekte. Die eigentliche Essenz der Wissenschaft ist eine Reihe von Methoden, den Irrtum zu vermeiden und damit zu […] [Original post on fediscience.org]
Menschen in Laborkitteln vor einem Quantencomputeraufbau, mit Formeln überlagert.
003 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 16/02/2026
Mein Vortrag über 'wissenschaftliches Denken' -- wie die Menschheit über Jahrhunderte immer besser gelernt hat, den Irrtum zu vermeiden, und was uns das auch im Alltag helfen kann. Hier auf Video (vom 31. Januar 2026) […] [Original post on fediscience.org]
Eine Bildergallerie aus dem Vortrag: Gittarensaiten, Seifenblase, Teilchenbeschleuniger, Jaguar und Fruchtfliege, Sternenhimmel, Zusammenfassung wichtiger Aspekte des wissenschaftlichen Denkens ("Irren ist menschlich, Skepsis, So einfach wie möglich, Beobachtungen, Systematik und Präzision, Vorhersagekraft, Statistisches Denken")
201 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 25/12/2025
Happy holidays, everyone! In this year's Christmas picture, I illustrate some aspect of #AI, but I made the picture itself without AI (rather, inkscape)... It is entitled "Attention / ... red apple under the tree is ..." Experts might figure it out... @MPI_ScienceOfLight
An abstract picture with 6 grey vertical bars that seem connected with grey branches. Colorful streams of triangles pass through the bars and the branches. These  streams start as a single color each, but as they get connected, they mix colors.
032 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 24/12/2025
Book recommendation: Autobiography by Katalin Karikó, the Hungarian-born biochemist who provided the foundations for modern mRNA based vaccines and treatments. Her breakthrough paper together with Drew Weissman was rejected by Nature as 'only an incremental […] [Original post on fediscience.org]
Title page, book by Katalin Karikó, showing the DNA double helix and some photos
121 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 18/12/2025
Das Wurmloch über Erlangen ist dank Quantencomputer und Quantensatellit abgewehrt worden...
Bühne mit Quantensatellit über Wurmloch
000 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 18/12/2025
Kai Schmidt vor dem Surface Code
100 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 18/12/2025
Surface Code Quantenfehlerkorrektur in der 'Weihnachtsvorlesung' der Erlanger Physik
Farbige Formen auf einem Gitter aus LEDs
100 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 13/12/2025
@MPI_ScienceOfLight One slide from the lecture, introducing text generation via transformers.
Slide showing a schematic of text generation using a transformer neural network (predicting the next word).
000 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 29/10/2025
In Waterloo, Ontario, you find a hotel restaurant called 'proof'. :-)
A square mat for a cup that looks like a blackboard full of math
082 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 10/10/2025
I just finished reading the great book by @timbl Tim Berners-Lee, 'This is for Everyone' -- describing the history of the web and how we can get back data sovereignty. Great insights, several honourable mentions of #Mastodon and an explanation why his Solid […] [Original post on fediscience.org]
022 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 03/10/2025
Scientific discovery relies on a cycle of observations, analysis, and coming up with new hypotheses. Can a computer mimic that cycle and explore an unknown system in this way? We introduce #SciExplorer, which for the first time employs agentic behaviour in […] [Original post on fediscience.org]
Stylized image of a head containing a neural network, overlaying a gallery of images from scientific exploration (plots of curves and wave fields).
036 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 12/06/2025
Great panel discussion right now at the 100 Years of Quantum Mechanics conference on Helgoland. (left to right: Liang Jiang, Birgitta Whaley, Rob Schoelkopf, Michelle Simmons, Charles Bennett) #quantum #quantumcomputing @MPI_ScienceOfLight
020 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 17/05/2025
Spektren (wie hier von einer Natriumflamme) waren entscheidend für die Entwicklung der #Quantenmechanik. Niels Bohr fand 1913 seine Theorie des Wasserstoffatoms, um die Frequenzen der Linien zu deuten. Beim Versuch, die Intensitäten der Linien zu verstehen […] [Original post on fediscience.org]
Spektrum mit heller gelber LinieFlamme, orange
002 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 17/05/2025
@MPI_PhysikDesLichts @FAU Die guten alten Polarisationsfilter sind auch beliebt...
Rubber being bent displays colours when placed between polarization filters
100 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 17/05/2025
Hier bei der #BlaueNacht in #nurnberg im #Zukunftsmuseum sind wir vom Max-Planck-Institut für die Physik des Lichts @MPI_PhysikDesLichts und @FAU heute abend mit Infos zur #Quantenkommunikation mit Satelliten vertreten!
Experimenteller Aufbau und Monitor mit Film über Satellit
100 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 16/05/2025
Happy #DayOfLight from the Max Planck Institute for the Science of Light! @MPI_ScienceOfLight @maxplanckgesellschaft
Foyer with roof light and a big black sphere
120 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 15/05/2025
Diesen Freitag sind wir vom Max-Planck-Institut für die Physik des Lichts @MPI_PhysikDesLichts in #Erlangen in der Innenstadt am Hugenottenplatz, ab 12:00, zum #TagDesLichts und internationalen Quantenjahr 2025, mit Kurzvorträgen -- und abends dann in unserem […] [Original post on fediscience.org]
Oberlicht mit Schattenspiel auf der WandInstitut von aussen
010 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 18/04/2025
@SeanPLynch And here is the transmission data from the original paper (creative commons license): iopscience.iop.org/article/10.3847/… New Constraints on DMS and DMDS in the Atmosphere of K2-18 b from JWST MIRI Nikku Madhusudhan […] [Original post on fediscience.org]
spectrum, with features highlighted as DMS, DMDS
000 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 06/04/2025
@maxplanckgesellschaft @MPI_ScienceOfLight
Helgoland in the sea from a distanceHelgoland harbor
110 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 06/04/2025
@maxplanckgesellschaft @MPI_ScienceOfLight In June 1925 a 23-year-old Werner Heisenberg made a crucial step in his discovery of the modern form of quantum theory. He went to the island because he was suffering from hay fever.
Commemoration stone for HeisenbergFamous 'Lange Anna' - isolated sandstone rock.
141 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 06/04/2025
Today I am returning from my scouting trip to the island of #Helgoland , where we will be organizing our conference 100 Years of Quantum Mechanics in June. The island in the North Sea is a beautiful spot! The ferry ride from Hamburg takes almost four hours […] [Original post on fediscience.org]
Red sandstone cliffs overlooking the seaBirds breeding on the cliffs. Blue sea. Sunny skies.
2103 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 21/03/2025
The #Quantum NanoScience Center in South Korea apparently has annual art contest with really high-level entries like dance performances and art installations. I learned this today at a session entitled Art and Science at the APS Global Summit in Anaheim […] [Original post on fediscience.org]
030 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 20/03/2025
Rock'n Roll Physics Sing-Along #americanphysicalsociety #APSSummit25
Band playing, slide with colorful image and song lyrics
050 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 19/03/2025
Spin Qubit Art Installation #APSSummit25 #americanphysicalsociety
Golden metal construction of tubes, with thin threads carrying golden drop clusters, atop a black box.
010 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 19/03/2025
Steampunk Quantum Engine #APSSummit25 #americanphysicalsociety #APSGlobalSummit2025
061 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 19/03/2025
1980s video arcade machines at the #americanphysicalsociety #APSSummit25 ... next to the booths of the quantum companies...
arcade machines
010 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 16/03/2025
Just arrived in Anaheim, California, for the American Physical Society #APSGlobalSummit2025, the largest physics meeting in the world (this time combining all branches of physics). I am curious to see how the mood is among my US colleagues […] [Original post on fediscience.org]
Palm tree amid houses, blue sky, sunny
1120 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 28/02/2025
#History of #Science: It is amazing how quick people were in writing scientific articles in the past. Hahn and Strassmann had done their final crucial control experiment on what would be called nuclear fission on December 17, 1939. In the calendar entry […] [Original post on fediscience.org]
Two pages, handwritten diary of Otto Hahn
031 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 26/02/2025
History of Science Oddity: Today the Max Planck Society is composed of about 80 Max Planck Institutes. It was founded after the war as successor to the Kaiser Wilhelm Society for Science. However, today I learned there is one curious case of a building from […] [Original post on fediscience.org]
Building with attached label Max Planck InstitutSmall inscription next to the door: Kaiser Wilhelm Institut für Physik
032 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 18/02/2025
#Helgoland2025 Please share: If you are interested in the foundations of Quantum Mechanics, there are now again a few slots open in our upcoming conference on the island of Helgoland, in June 2025. Celebrating 100 years of Quantum Mechanics! General […] [Original post on fediscience.org]
Abstract image of an eye on a triangle, with some other shapes nearby. Evokes the mystery of quantum mechanics.
016 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 16/02/2025
A famous example of #AutomatedScientificDiscovery is "Adam the Robot Scientist". This is a machine, introduced in 2004 by Ross King and others, that can do biochemistry experiments on its own and smartly pick the next experiment to do. More precisely, it is […] [Original post on fediscience.org]
A robot (chemistry machinery) in a lab.
010 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 13/02/2025
Pink Fridge: Today I visited the labs of Natalia Ares in #Oxford. She has the only pink dilution fridge in the world. These are the kind of machines that help produce the lowest temperatures, slightly above absolute zero. This is important for #quantum […] [Original post on fediscience.org]
Smiling scientists in front of a large pink metal tube
2136 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 28/01/2025
iphone/Safari/search: I just noticed you can easily select another search engine in the iOS settings for Safari, including the privacy-conscious, non-Google DuckDuckGo. #searchengine #iOS #Safari
010 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 28/01/2025
Automated Scientific Discovery aims to make computers capable of aiding scientific progress even in those aspects that go beyond mere number crunching and conceptually simple data analysis, extending into domains that require more creativity and heuristics […] [Original post on fediscience.org]
A mass spectrum on top of a picture of Mars.
132 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 19/01/2025
Today I watched a fascinating documentary movie, #TracingLight. It approaches light through a mix of scientists in their labs and artists and their installations, and it brings the scientists and artists together (filmed mostly in the UK and Germany). As one […] [Original post on fediscience.org]
A 2m diameter sphere, black in one half, white in the other.
056 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 18/01/2025
Just returning from Stockholm, where I was teaching an eager crowd of physics students some aspects of artificial intelligence for scientific discovery. If you ever visit #Stockholm, visit the #Vasa museum, showing off this gigantic ship that sank […] [Original post on fediscience.org]
giant 17th century shipwreck in a museumshipwreck from front
050 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 21/12/2024
(continuing my exploration of #claude ) I am also quite impressed by Claude's ability to produce interactive little web programs based on the user's prompts, and re-adjust them when needed during the conversation. Here is a simple example, starting with […] [Original post on fediscience.org]
A plot of a sine curve on dark background. On top, a text field where one can enter the function to be plotted.
010 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 04/08/2024
Beautiful animation of solutions to the three-body problem on Wikipedia (credit: Perosello). upload.wikimedia.org/wikipedia/comm…
An array of pictures of three colored planets circling around each other with a variety of complicated trajectories
000 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 29/07/2024
'Draw a photon!' Here is a picture drawn by participants at our conference last week in Ottawa. What would you draw? #MaxPlanckCentre @MPI_ScienceOfLight @maxplanckgesellschaft
Pictures of photons, like wavy lines and wave packets
102 0
Florian Marquardt @fmarquardtgroup.fediscience.org.ap.brid.gy · 16/07/2024
For friends of #neuromorphicComputing, we are happy that our new idea, spearheaded by Clara Wanjura, is now published in #NaturePhysics. It shows how to take a linear optical device and turn it into a fully nonlinear neuromorphic device which can be trained […] [Original post on fediscience.org]
A brain with optical waveguides, symbolizing optical neuromorphic devices.
100 0