Ariel Levenson's Avatar

Ariel Levenson

@ariel-l

CNRS senior researcher. Nonlinear and quantum optics, nanophotonics. Omnivore and defender of diversity. Posts and likes are personal views.

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18.12.2024
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Latest posts by Ariel Levenson @ariel-l

You can also see History of Quantim Dots
➡️ youtu.be/6qEWG8xu6wQ?...

02.02.2026 16:11 👍 1 🔁 1 💬 0 📌 0

On vise donc l’élevage ?

29.01.2026 13:57 👍 0 🔁 0 💬 0 📌 0
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February 6 at 3pm (France) Marin Soljacic, a distinguished guest, will address the question: Can AI help/produce discoveries in photonics? An important question, even if it seems provocative. Free webinar by the GdR ONDES andComplexe, and the French Optical Society. www.sfoptique.org/pages/sfo/wa...

19.01.2026 11:28 👍 0 🔁 0 💬 0 📌 0
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And 🥁 the final program of the *"Image Science" Gordon Research Conference*, to take place in Italy April 26-May 1st, is out!
Please take some time to check the program, apply, *share* with your colleagues.
www.grc.org/image-scienc... (1/N)

05.01.2026 09:07 👍 12 🔁 7 💬 1 📌 0
L'histoire des boîtes quantiques
L'histoire des boîtes quantiques YouTube video by C2N Centre de Nanosciences et de Nanotechnologies

History of Quantum Dots: It was a pleasure to collaborate to this movie on the history of quantum dots. Produced as part of of the PÉPITES program of the French Optical Society, SFO. @c2n-nanos.bsky.social

youtu.be/p89chOVElSA?...

14.12.2025 20:03 👍 9 🔁 3 💬 0 📌 1
Preview
Le palais de la découverte en sursis ? - 28 minutes (18/06/2025) - Regarder l’émission complète | ARTE La réouverture du Palais de la Découverte, le musée des sciences à Paris, a été reportée par le gouvernement. Xavier Mauduit nous raconte les origines de ce lieu consacré à la démocratisation des conn...

Avenir du Palais de la Découverte. Excellent billet de Xavier Mauduit dans les 28 minutes de ARTE
qui se termine par : "Science sans transmission n'est que ruine de la démocratie"
Signons la pétition !!!!
www.arte.tv/fr/videos/12...

20.06.2025 14:18 👍 7 🔁 1 💬 2 📌 0
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May 22, 2025 from 11:00 AM to 12:30 PM
An introduction to Neural algorithms.
The first of 3 Wabinaires on AI and Photonics organized by the French Optical Society, the GdRs Ondes and Complexe.
Free, pedagogical and without compromise !
www.sfoptique.org/pages/sfo/wa...

16.05.2025 11:10 👍 6 🔁 0 💬 0 📌 0
"WE'VE ARRANGED A society based on science and technology, in which nobody understands anything about science technology. And this combustible mixture of ignorance and power, sooner or later, is going to blow up in our faces. Who is running the science and technology in a democracy if the people don't know anything about it?"
"Science is more than a body of knowledge, it's a way of thinking. A way of skeptically interrogating the universe with a fine understanding of human fallibility. If we are not able to ask skeptical questions, to interrogate those who tell us that something is true, to be skeptical of those in authority, then we're up for grabs for the next charlatan, political or religious, who comes ambling along."

"WE'VE ARRANGED A society based on science and technology, in which nobody understands anything about science technology. And this combustible mixture of ignorance and power, sooner or later, is going to blow up in our faces. Who is running the science and technology in a democracy if the people don't know anything about it?" "Science is more than a body of knowledge, it's a way of thinking. A way of skeptically interrogating the universe with a fine understanding of human fallibility. If we are not able to ask skeptical questions, to interrogate those who tell us that something is true, to be skeptical of those in authority, then we're up for grabs for the next charlatan, political or religious, who comes ambling along."

I think a lot about what Carl Sagan said in one of his final interviews.

04.05.2025 06:21 👍 18519 🔁 6302 💬 247 📌 277
Trump contre la science (vidéo n°436)
Trump contre la science (vidéo n°436) YouTube video by Julien Bobroff

J'essaye en 2mn de vous expliquer pourquoi Trump agit contre la science et pourquoi ça ne se limite pas aux USA.

Le mouvement américain : standupforscience.org
et chez les français : standupforscience.fr

#standupforscience #standupforsciencefrance

youtube.com/shorts/HYEh8...

07.03.2025 07:16 👍 218 🔁 138 💬 15 📌 12
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Standup for science!

07.03.2025 13:16 👍 6 🔁 0 💬 0 📌 0
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Stand up for Science!
Partout dans le monde et à Paris.
Nous comptons sur vous le 7 mars !
9h30 – Conférence de presse ouverte au public au Collège de France
11h30 – Tables rondes et exposés ouverts au public à Jussieu (amphithéâtre 45B)
13h30 – Marche #StandUpForScience
👉 standupforscience.fr

05.03.2025 08:27 👍 38 🔁 25 💬 1 📌 1
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Almost Bluesky!

27.02.2025 18:50 👍 5 🔁 0 💬 0 📌 0
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👉 Deadline 31 mars candidatures Prix Jean Jerphagnon.
qui récompense un/e candidat/e portant un projet photonique de grande qualité scientifique et au potentiel industriel
3 derniers lauréats: Julien Laurat, Niccolo Somaschi, Kate Grieve
SOCIETE FRANCAISE D'OPTIQUE
www.sfoptique.org/pages/la-sfo...

17.02.2025 13:36 👍 3 🔁 1 💬 0 📌 0
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« On a bien besoin de Wikipédia pour résister à des gens comme Musk » : entretien avec le Nobel agenais Alain Aspect, qui sort un livre sur la physique quantique Le Lot-et-Garonnais publie « Si Einstein avait su », revenant sur un fameux débat au cœur de la physique quantique. Un ouvrage qu’il destine autant aux profanes qu’aux plus aguerris. L’auteur sera ce ...

« On a bien besoin de Wikipédia pour résister à des gens comme Musk » : entretien avec le Nobel agenais Alain Aspect, qui sort un livre sur la physique quantique

Plus le temps passe, plus j'apprécie Aspect pour ses prises de position en plus du travail scientifique.

www.sudouest.fr/sciences-et-...

06.02.2025 07:49 👍 48 🔁 11 💬 2 📌 0
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International year of Quantum Science and Technology is open!

04.02.2025 09:12 👍 2 🔁 0 💬 0 📌 0
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great time around a beer! on the harmonica Rachel Plas 👏

26.01.2025 18:57 👍 3 🔁 0 💬 0 📌 0
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Cela me rappelle cette photo prisee, moins pro, à la fondation Carmignac de Porquerolles

18.01.2025 07:53 👍 1 🔁 0 💬 1 📌 0
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23 et 24 janvier : Journées 40 ans des boîtes quantiques - Hommage à Jean-Yves Marzin Inscriptions gratuites mais obligatoires. Attention l'amphi sera bientôt complet ! 👉 quantumdots.sciencesconf.org/resource/pag...

11.01.2025 09:24 👍 4 🔁 2 💬 0 📌 0
Obituary of Wilson Sibbett - Page 1

Obituary of Wilson Sibbett - Page 1

Obituary of Wilson Sibbett - Page 2

Obituary of Wilson Sibbett - Page 2

A warm and wonderful recognition of Wilson Sibbett written by friend and colleague Roy Taylor in the latest issue of Nature Photonics. I am unsure about access options so (lower resolution) screenshots are below. www.nature.com/articles/s41...

08.01.2025 09:53 👍 8 🔁 3 💬 0 📌 0

Il faudrait rajouter Berlin désormais.

03.01.2025 14:12 👍 0 🔁 0 💬 0 📌 0
Quel âge a la lumière ? (vidéo n°415)
Quel âge a la lumière ? (vidéo n°415) YouTube video by Julien Bobroff

Démarrons l'année avec une question étrange à la réponse encore plus étrange : quel âge a la lumière ??? Bonne année à toutes et à tous.
youtube.com/shorts/pAXvO...

01.01.2025 14:37 👍 77 🔁 22 💬 6 📌 1

Santa Qlaus effect?

28.12.2024 09:41 👍 6 🔁 1 💬 0 📌 0
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HISTORY OF PHYSICS

Chandrasekhara Venkata Raman and his love for music.

Although he didn't study them exhaustively, Raman discovered that the rich tonal quality of the tambura and veena (shown below) was due to the peculiarity of the bridge.

1/

27.12.2024 15:01 👍 14 🔁 5 💬 1 📌 0

I agree, they are Closer each other than the original French title of My way, “Comme d’habitude”

26.12.2024 09:37 👍 2 🔁 0 💬 0 📌 0
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This “Christmas tree” with the design incorporating Fresnel optics, was in operation at the Vilan Cap Lighthouse in Galicia from 1896 to 1964! the light reached 64 km.
I wish you a wonderful holiday season with your family.

26.12.2024 07:17 👍 13 🔁 1 💬 0 📌 0

Are they claming that in France we are always in vacation? 🇫🇷🙃

24.12.2024 09:11 👍 0 🔁 0 💬 0 📌 0
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It is well known that AI allows impulses to be shaped at will, including higher dimensions ...

23.12.2024 17:21 👍 1 🔁 0 💬 0 📌 0

Palau de la musica catalana, Barcelona. Impressive!

22.12.2024 15:05 👍 1 🔁 0 💬 0 📌 0
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Without words… but very comforting in these complicated times!

22.12.2024 14:57 👍 3 🔁 0 💬 1 📌 0