A late Christmas gift by me to me 😅 It did not disappoint ☕️ #coffee #specialtycoffee

🚨The 2025 #NobelPrize for Physics goes to John Clark, Michel Devoret & John Martinis “for the discovery of macroscopic quantum mechanical tunnelling and energy quantization in an electric circuit”. More details soon... ⚛️🧪 physicsworld.com/a/john-clark...

The pioneering work of Clarke, Devoret, and Martinis showed that very cold electrical circuits behave in ways that exhibit fundamental principles of quantum physics. www.nobelprize.org/prizes/physi...

Not sure if there are any #coffee lovers out there among my followers? If so, this one's for you. ☕ I just got a Hario Switch after a lot of hesitation, thinking that it would not make much of a difference. After brewing a few cups with it, I am genuinely amazed by the result. Strongly recommended!

This one just dropped! Using parameter estimation techniques to efficiently characterise Gaussian states of light. journals.aps.org/prl/abstract...

It's a bit haunting to be alone in a room with Van Gogh... I recommend everyone who likes art to get a carte blanche at @museeorsay.bsky.social, which gives you entry 30 minutes before the museum opens to the crowds!

What happens when you put a bunch of highly talented first-year master students together with a brilliant post-doc? First, there is a lot of magic involving algebraic geometry and then you have a protocol for generating arbitrary multimode multi-photon states! 💪 arxiv.org/abs/2507.19397

📣 Le Palais de la Découverte a besoin de vous ! Musée de sciences installé à proximité des Champs-Élysées, il attire les curieux et férus de science depuis son ouverture en 1937. Fermé depuis 2020 pour rénovation, sa réouverture est aujourd'hui menacée.

Dear friends and colleagues from the physics community, be sure not to forget that you can nominate young researchers for the early career prize of New Journal of Physics! 🏆 iopscience.iop.org/journal/1367...

Hello #quantum community! Just a little heads up that there is still some time to apply !

New paper out! We resonantly couple a superconducting heavy-fluxonium qubit ⚛️ to a macroscopic membrane 🥁 oscillating at a few MHz. ~300 repeated interactions let us track its quantum motion, observe back-action & probe non-commuting operators. Diósi–Penrose next? (1/8) arxiv.org/abs/2505.21481

🌟 Post-Doc Opportunity in Quantum Computing! 🌟 Join us at @lkblab.bsky.social in Paris to explore photonic quantum computing. Apply by June 15th, 2025. 🔗 Job Announcement: www.lkb.fr/multimodequa... #QuantumComputing #PostDoc #JobOpportunity

Being a quantum optics group in the city of lights, we love light! Happy international day of light, everyone! #dayoflight

I'm at the perfect place for a workshop on #quantum correlations 😎

Our paper "Purification of Gaussian states by photon subtraction or addition" is now published in PRA! 🎉 We explore how, surprisingly, photon subtraction and addition can enhance Gaussian state purity, revealing new potential in quantum optics. journals.aps.org/pra/abstract... #QuantumOptics

I think I completed the next level of "being french".

📢 Service announcement for the #quantum crowd : PRX Quantum just updated its acceptance criteria. This update is a clarification and does not change editorial practices. However, it should make it easier for you to choose what to submit to the journal. journals.aps.org/prxquantum/a...

Finally, a holiday I celebrate. Happy 4th of May from behind my mug of tea, everyone!

C'est trop bien !

🌟 Quantum Community, Help Needed! 🌟 My tutorial "Non-Gaussian States and Where to Find Them" needs a few updates. If you've spotted errors, please share! Let's improve it together. journals.aps.org/prxquantum/a... #QuantumOptics #Feedback

🎨The Sensation Quantique exhibition, blending art and science, opens today at the Institut Henri Poincaré and runs until July 25. Go check it out! 🔗 More info here: lnkd.in/dnp6C9Rw @sorbonne-universite.fr @normalesup.bsky.social @collegedefrance.bsky.social

One of the surprising joys of parenthood is waking up at 5.30 am and listening to the imperial march together with your baby. The force is strong in this one...

Now that I have some time. Here are a few more words on this work. At its root, this work started from a simple question: is non-Gaussianity fundamentally useful in quantum metrology?

📃 Heisenberg put limits on how well we can jointly *measure* position and momentum. However, these limits do not apply in the framework of estimation theory. In our new work, we show that non-Gaussianity is a crucial resource to increase precision in such estimation. arxiv.org/abs/2504.01910

Very impressive work!

🔬 @cnrs.fr  is recruiting a Junior Professor Chair in Fundamental Physics! Join Laboratoire Kastler Brossel, LAC, or LPL for an experimental research project in quantum physics. 📌 Duration: 6 years | 📍 Location: Paris 📢 More information:

🔬 Junior Professor Chair – Quantum Science and Technology The Kastler Brossel Laboratory and @sorbonne-universite.frare hiring a Junior Professor. 📌 Duration: 3 to 6 years | 📍 Location: Paris 📢 More information: https://www.lkb.fr/jobs/?type_poste=chaire-de-professeur #QuantumPhysics

What saddens me about public debate France today is that there seems to be more outrage about someone being excluded from an election rather than about that someone stealing over 4 million euros of our money...

Want to be sure not to add the wrong person to your group chat? Perhaps quantum communication might be a thing for you! Here we investigate under which conditions providers can safely establish entanglement links between two end-users : arxiv.org/abs/2503.20547

We're opening a few postdoc positions in our group. The first one is about experimental multi parameter estimation in imaging problems using Spatial Mode Demultiplexing (SPADE). Contact @nicolastreps.bsky.social if you're interested! www.lkb.fr/multimodequa...

Our theoretician Ilya Karuseichyk and experimentalist Niels Tripier-Mondancin put their heads together and developed a new, and provably optimal, method to characterise Gaussian states! 😎 arxiv.org/abs/2503.14188

Julien Laurat is at the APS Global Physics Summit. He will give a talk at the Kimble Memorial Session, "20 Years of Quantum Memories". 20 years ago Julien moved to Caltech and started his journey in memories and networks with Jeff. Jeff was a giant in Physics and a friend to many of us. #APSSummit25

The quantum advantage cycle is at it again. In a few years, we will start ranking quantum hardware milestones by the time it takes the community to develop a classical method to beat them.

At PRX Quantum, we are very excited to launch a collection of papers celebrating the International Year of Quantum Science and Technology! Have a look… and for those at the APS Global Physics Summit 2025 please come to our session on Tuesday to hear more! prxquantumcollection.org

The QEC team at Alice & Bob is hiring ! Come work with me on 🐈 cat codes, 🐅 tiger codes, decoding, biased-noise, distillation, LDPC codes, ... 👇 jobs.lever.co/alice-bob/c0...

Only 4849 spots left to register by zoom! LOL. Thanks everyone who registered for this historic event and see you tomorrow. Remember scientific hypes are short lived so get on it while it lasts!

Grade noch rechtzeitig vor der Bundestagswahl: das Opinion-Stück für die @nytimes.com über das Erstarken der Rechtsextremen, effektives "truth twisting" und die deutsche Geschichtsvergessenheit. www.nytimes.com/2025/02/20/o...

If you want to be up to date on the latest quantum controversy, this is where you should start!

Is it me, or are there some strong Return of the Jedi vibes here? The emperor, sitting in his throne, Darth Vader, explaining his devious schemes to bring order to the galaxy, and Darth Vader's kid randomly running around... Just saying I prefer George Lucas' version with lightsabers and lightning.

Women of LKB on stairs to break the glass ceiling ! ✊ Happy international day of Women & Girls in Science !👩‍🔬 #WomeninSTEM

🎉 Julien Laurat elected Optica Fellow 2025 Congratulations to Julien Laurat, professor at @sorbonne-universite.fr and researcher at the LKB, on his election as Optica Fellow 2025 by Optica, in recognition of his major contributions to quantum optics and quantum networks. www.lkb.fr/en/laboratoi...

I added some memory to this quantum feed. Let's see if this works. The quantum community out here seems to get more lively with time. Still slower than X somehow. Convince your friends to join here. bsky.app/profile/did:...

I take a little break from being on a break to congratulate Xanadu on this nice bit of progress on photonic quantum computing! 👏 I'm also really proud to see my PhD student, Carlos Lopetegui who has been consulting with Xanadu for ages, on the author list! 💪 www.nature.com/articles/s41...

Today I formally left twitter and deactivated my account. For many years I enjoyed the interaction there, notably with the quantum community. It saddens and scares me to see what kind of a vile and hateful place that platform has become... It's good to be here 🙃

It both feels very long ago and yet very recent...

A little quantum discussion to start off the year. I was recently asked what is so revolutionary about Google's Willow chip. In short my answer was "nothing really, it's more of an impressive but expected evolution than a revolution.". Now I'm curious, do people in the community agree?

Que se passe-t-il ce matin dans le Jura ? -24.0°C à Chapelle-des-Bois -28.1°C à Reculfoz -31.1°C à La Brévine Nous a-t-on menti à propos du réchauffement climatique, afin de nous instaurer plus de taxes ? Toujours pas, il s'agit de trous à froid. Kézako ? A dérouler

Happy International Year of Quantum Science & Technology! #IYQ2025

Major update: The zoo is not just a repository, but also a taxonomy. Now, every code page has a visualization of the code's primary ancestors. 🧵

📢 You can follow the Laboratoire Kastler Brossel here where the skies are blue! All good and follow @lkblab.bsky.social