Sylvain Gigan
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sylvaingigan.bsky.social
Sylvain Gigan
@sylvaingigan.bsky.social
Prof. Sorbonne Université / @comedialkb.bsky.social / @lkblab.bsky.social | ENS Paris | Interested in Physics, but also imaging, computing, quantum optics and in the beauty and applications of light in general | proud dad & Husband | he/him
I was deeply honored to receive yesterday the Cecile DeWitt Morette Prize / Ecole des Houches / CFM foundation prize from the french @academiesciences.bsky.social, crowning a lot of hard work, creativity and fun with my team @comedialkb.bsky.social. Thank you!
October 29, 2025 at 12:54 PM
It was nice visiting Willem Vos's COPS group last week ! thanks for the warm welcome and great science discussion !
October 14, 2025 at 5:58 AM
Back home after a great 3-day trip to the NL, for the NNV-AMO meeting, and visiting COPS in Twente and Allard Mosk's group at U. Utrecht. No cheese this time, but I couldn't come back with a collection of great PhD thesis :-).
(why do we do A4 format in France? this is soooo much better!)
October 9, 2025 at 5:21 PM
very honored to give the opening lecture tomorrow at the NNV AMO meeting in Egmond aan Zee (NL). Very curious to see what happen if -probably- the Physics prize is announced during my lecture (probably nobody will pay attention to the second half of my lecture).
October 6, 2025 at 8:02 PM
🚨Registrations are open for the upcoming "Image Science" Gordon research conference , to take place in Italy, April 26-May 1, 2026. Check out the amazing program, tell your friends and share, APPLY! 🚨
www.grc.org/image-scienc...
September 25, 2025 at 6:31 AM
This is the end of a short visit to ETH Zurich, I was very intimidated to visit the math department (as an experimentalist) but it turned out great, thanks to my host Habib Ammari. Also great to (re)connect to colleagues in Physics, Mechanics & engineering, and enjoy a nice Picasso exhibition.🇨🇭🧀🍫
September 18, 2025 at 1:33 PM
Well hidden in a small corner of the main building of ETH Zurich, they have made a mini museum for Einstein in his former locker 😍
September 17, 2025 at 7:54 PM
Tinguely’s cyclop 😲 in the Fontainebleau forest.
August 17, 2025 at 1:25 PM
a hint :
August 11, 2025 at 12:11 PM
#PhysicsTrivia what is the link between these two pictures ? ⚛️
August 10, 2025 at 10:30 AM
Answer : both animals present swarm and flocks behavior, a phenomenon studied in the field of active matter in physics ! (Congrats to @ramirogodoy.bsky.social from ESPCI)
July 21, 2025 at 11:09 AM
#PhysicsTrivia what is the link between these two pictures ? ⚛️
July 20, 2025 at 11:17 AM
And the answer is : they are both Helmholtz resonators, I.e cavities with an opening that resonates !

newt.phys.unsw.edu.au/jw/Helmholtz...
July 20, 2025 at 11:02 AM
#PhysicsTrivia what is the link between these two pictures?
July 19, 2025 at 1:52 PM
#PhysicsTrivia what is the link between these two pictures?
July 18, 2025 at 9:40 AM
And the answer was that both the travelling salesman problem and the graph coloring problem are exemples of combinatorial problems that can be mapped to (and solved by) the Ising Model
July 18, 2025 at 5:31 AM
#PhysicsTrivia what is the link between these two pictures?
July 16, 2025 at 2:36 PM
#PhysicsTrivia what is the link between these two pictures?
July 15, 2025 at 11:35 AM
And the answer is : whispering gallery modes ! Resonant modes over circular trajectories, first discovered in Saint Paul cathedral for acoustic (audio) waves, but with tons of applications in optics and photonics (spherical or toroidal microcavities)
July 13, 2025 at 7:08 AM
#PhysicsTrivia what is the link between these two pictures?
July 10, 2025 at 7:46 PM
and the answer was phase transition. Float glass is made by "floating" molten glass over (very) hot tin, then cooling it down to the vitrous phase transition, akin to freezing a lake surface.
July 10, 2025 at 7:17 AM
#PhysicsTrivia what is the link between these two pictures?
July 7, 2025 at 9:05 PM
#PhysicsTrivia what is the link between these two pictures?
July 4, 2025 at 1:24 PM
And this is the answer : tides are more like a drum than like a rotating deformed sphere like usually pictured. For instance, there are nodes (points without tides) and anti-nodes (areas of maximum amplitude tides) like the mont saint-Michel.
July 4, 2025 at 5:57 AM
#PhysicsTrivia what is the link between these two pictures?
July 3, 2025 at 6:23 AM