Théau Peronnin

What if we could finally simulate some of the most complex molecules out there? 🚀✨ Today, some essential molecules remain a mystery, because the information required to simulate them precisely grows faster than classical computers could ever compute. 🌀🧮 That’s where quantum computing comes in. ⚛️🖥️ Yet, we must first build and scale quantum computers powerful enough to run the algorithm… 📝 In our latest resource estimation, we show that cat qubits could simulate two of quantum chemistry’s benchmark problems, P450 and FeMoco, with far fewer physical qubits than other superconducting architectures. 🐈 🔍 Fewer qubits doesn’t just mean more efficient machines, it could make impactful, large-scale quantum chemistry applications a reality sooner. 🎨 See our infographic below for an explainer. ✍️ Read our latest blogpost for a deep-dive: 👉 alice-bob.com/blog/cats-for-… And this is just the start… we expect to bring down this estimate even further soon. 👀 Stay tuned! #QuantumComputing #QuantumChemistry #Innovation #CatQubits

Superconducting tech just reached Nobel Prize status! 🏅 John Clarke, Michel H. Devoret, and John M. Martinis, the founding fathers of superconducting circuits, have been awarded The 2025 Nobel Prize in Physics! 🌟 Their pioneering experiments have made today’s quantum computers possible, proving that quantum mechanical effects like tunnelling and quantized energy can be applied to macroscopic systems. ⚡ Their work started it all, not only paving the way for using superconducting circuits to build quantum computers, but showing that electrical circuits in general could be quantum devices, creating a profound impact on our field. 🔬 We’re proud that John M. Martinis is a scientific advisor at Alice & Bob, while Michel H. Devoret, who advised Alice & Bob in our early days, co-founded the Quantum Electronics Group at @ENS_ULM in the late 2000s, alongside @BHuard_Lyon — the very group that would give birth to Alice & Bob a few years later.💡 Devoret also co-invented the cat qubit, the foundation of our approach at Alice & Bob. 🐱 This recognition celebrates the impact of superconducting technology on our understanding of quantum physics, and its promise for turning practical quantum computing into a reality. ⚛️💻 A huge congratulations to Clarke, Devoret, and Martinis for their immense contributions. An inspiring day for our field! 👏 #NobelPrize2025 #Physics #QuantumComputing

The latest from the lab, just preliminary results, but they're juicy...🛡🐾 Everything is in our blogpost linked below! Last year we achieved a bit-flip lifetime of over 7 minutes, the longest in the world for superconducting qubits. Since then, we’ve been optimizing our cats to make them even more robust and stable. 📊💪 And now, in our latest experiment, we record experimental data extending their bit-flip resistance far beyond established results: cat qubits can go over one whole hour without bit flips! 🛡⚡ These results were gathered on our latest cat qubit design, the same used in our flagship 12-qubit chip, Helium. 🐈⚛️🖥️ In parallel, we are working on maintaining similar performance during a two-qubit gate, a critical element for our upcoming phase-flip error correction experiment. 🚀 Stay tuned! On bit-flip lifetime alone, these results already surpass our 13-minute target for idle bit-flips on our 2030 fault-tolerant QPU, Graphene. 🙌 Phase flips, you're next. 😉 For the researchers and the curious, dive into our methods and results in our latest blogpost: 👉 alice-bob.com/blog/just-out-… A promising milestone, huge congrats to the Tiger Team at Alice & Bob! 🐅🏆

There’s no handbook for building a quantum computer. You figure it out as you go. 🌌 And we're lucky to do it with people who make the journey just as meaningful as the science. ⚛️ At Alice & Bob, that can look like: a theorist who treats predicting an experiment like a magic trick, a finance pro who’s also a triathlete, an HPC lead who's serious about co-op board games, and an experimentalist who enjoys finding art in complex plots. 🎨✨ 🎬 Meet some of the brilliant people on our team: Fabrizio, Manon, Rémi, and Daniela. 🙌 👉 Read their full stories on our blog: alice-bob.com/blog/meet-the-… #QuantumComputing #DeepTech #Innovation #FutureOfComputing #WorkLife #Startup

⚛️ ⚡Quantum will accelerate HPC by unlocking discoveries beyond the largest classical supercomputers we could ever conceive of. But adopting it will be fundamentally different from past accelerators. 📖 Our new report with @HGPResearch explores what’s ahead: early fault-tolerant quantum computing (eFTQC), and what this means for high-performance quantum computing. 🖥️ Why now? By the end of the decade, we’ll see the first useful quantum computers, but integrating them won’t be plug-and-play. It will require deep collaboration between HPC and quantum teams, from designing application workflows to evolving the software stack, to build these hybrid quantum-classical systems. 📐🤝 📝 In our latest blog, we distill the key takeaways from the report, and share future directions: 👉 alice-bob.com/blog/beyond-mo… 🔑 This report goes beyond perspectives, giving practical steps that HPC centers can take to start preparing for eFTQC now. 👉 Read the report: alice-bob.com/wp-content/upl… #HPC #QuantumComputing #Science #Report

RT @Alice__Bob: 🔥We’re cooking up something exciting with @nvidia ! At #GTC Paris, we shared a sneak peek of what’s coming next for Dynami…

🚀 Time for a new home for our cats: we’re building a €50M quantum lab in Paris! 🔬 Until now, we were focused on mastering the cat qubit. 🐱 We spent years studying its physics, doing the foundational work to make sure the single cat qubit worked exactly as we intended. Now comes the next logical step in our journey: turning that research into a powerful product, a useful quantum computer. Backed by our €100M Series B fundraising, we’re building a 4000m² product development lab to scale our technology, and bring it to the world. 💫 This is where we’ll brew the next generations of our cat qubit chips: Lithium, Beryllium, and finally, Graphene, our 100-logical-qubit quantum computer, planned for 2030. ⚛️🖥️ To bring this lab to life, we’re teaming up with the best: cryogenics leader @BlueFors_Ltd and quantum control electronics experts @QuantumQM. ✨ Our lab will feature: 🔹 A state-of-the-art nano-fabrication clean room to test and create our most powerful chips. 🔹 A cryostat farm 🧊 with space for 20 Bluefors dilution refrigerators, enabling us to test multi-qubit systems. This will be one of the largest quantum labs in Europe 🇪🇺, a pivotal step in making industrial-grade quantum technology a reality. 💪⚡ We’ve got the Alice & Bob dream team, soon we’ll have the lab to match our ambitions. Now let’s build the future. 📚 For more on our plans, check out our roadmap: alice-bob.com/roadmap/ 🗒️ Read the press release: alice-bob.com/newsroom/alice… Big thanks to all our Series B investors - led by Future French Champions, AVP, @Bpifrance - and to @BreegaVC, @Elaia_Partners , @EUeic, @innovacomvc, @iledefrance Fonds Île de France Réindustrialisation, and @SNovaVentures. 🙌 #QuantumComputing #FaultTolerantQuantumComputing #QuantumLab

How do you chart the future of FTQC? A summit in the French Alps, obviously. 🏔️ In collaboration with @CEA_Officiel, we brought together researchers and leading experts in quantum computing from @Google, @awscloud, @ETH_en and more at the iconic Les Houches Physics School. 🧠💡 At 1,150m altitude, where the thinking gets crisp, we dug into the latest research and explored the most promising directions in quantum error correction. 📚🔍 The week-long summit was the perfect mix of physics deep dives and nature-filled resets. 🌲🌄 Here’s what our days looked like: 🕓 Alarms ring for an early-morning run. The 4:30am start was tough… until we saw the sunrise over Mont Blanc. 🌅🏔️ 🧠 8:30am: Workshops begin. Candid, rigorous discussions on the hardest roadblocks in FTQC. 🔬 🥾 Noon: Chill time. Whether alpine hikes, naps, or spotting the local wildlife of the Chamonix Valley. 🦔💤 💬 5:30pm: Poster sessions. This legendary setting with small groups made for invigorating, in-depth chats. 📊 🎮 9pm: Time for fondue and friendly competition. Ping pong and chess tournaments took us late into the night. 🏓♟️ Shoutout to organizers Jérémie Guillaud (@Alice__Bob) and Nicholas Sangouard (@CEA_Officiel) for gathering the right people at the right altitude. 🙌 Thanks to all the speakers and participants who made it an unforgettable week! 💫 🎥 Check out the recap below. ✍️ Look out for scientific takeaways in our next blog post. 👀 🎙️ Speakers: Andreas Wallraff (@ETH_en), Barbara Terhal (@tudelft), Earl Campbell (@RiverLane_io), Harald (Harry) Putterman (@awscloud), Casey Duckering (@QueraComputing), Matt McEwen (Google), Nicolas Delfosse (@IonQ_Inc), Theodore Yoder (@IBM ), Bela Bauer (@Microsoft), Timo Hillmann (@XanaduAI), Chris Pattison (@Caltech), Aleksander Kubica (@Yale), Jonathan King (Atom Computing), Ramon Szmuk (@QuantumQM). Sponsors: Amazon Web Services (AWS) Google Microsoft Quantum Machines #QuantumComputing #FaultTolerantQuantumComputing #Physics #LesHouches

🚀 A new trick for speeding up quantum factoring (aka breaking encryption)? A new paper just came out showing how to significantly speed up Shor’s algorithm, the famous quantum algorithm that kicked off the field over 30 years ago. 🧪 They introduce the idea of “optimistic quantum circuits”, quantum circuits designed to work accurately most of the time, which can be enough for some tasks. Applying this concept to the Quantum Fourier Transform (QFT), this new research finds a way to approximate the QFT with a smaller circuit. 📚 For context: the Fast Fourier Transform (FFT) was one of the most important breakthroughs in classical computing, powering everything from signal processing to data compression. Its quantum version, the Quantum Fourier Transform (QFT), plays a key role in algorithms like Shor’s or quantum phase estimation. 🤔 But... should we get excited yet? ⚙️ The article introduces the algorithm and its asymptotic complexity, but more work is required to make it practical and have precise estimation of the resources it requires to run. ⚠️ The actual gains depend on having access to certain quantum resources (like cheap magic states), something that we’re still working toward. 🧠 Bottom line: Not a directly usable algorithm, but a smart idea that might change the way we design quantum algorithms, and that proves we can still make progress on algorithms people have studied for decades. ✨ If there’s one takeaway: quantum computing moves fast. A single breakthrough can shorten roadmaps overnight. And that’s what makes it so exciting. For the specialists following us, here's the paper in question: 👉 arxiv.org/abs/2505.00701 #QuantumComputing #ShorsAlgorithm #QFT #QuantumAlgorithms #Innovation

What happens when you open the doors to a quantum lab? 🔬 Fun, curiosity, and maybe even the spark of a future physicist’s career! 😉 At our Open The Box day, we invited our friends and family to visit our lab 👩‍🔬 They got up close with cryostats 🧊 enjoyed 101 explainers on our tech, and colored quantum machines in the kids’ zone ⚛️🎨. Guests of all ages dove into our quantum world, and the energy was electric! We even took the chance to pick their brains on some exciting future designs 👀 When you’re deep in the work, it’s easy to forget how cool it all is! Faces full of awe, curiosity and pride are the perfect reminder of why we do what we do. Here’s to doing it again next year 🙌 #quantumcomputing #physics #openthebox

2 talks of @Alice__Bob QEC team in parallel this morning: @Ruiz_Diego1 presented his new results on distillation with biased-noise: with bias=30 he already gets 150x reduction! I talked about implementing rotor codes So many subjects to work on, join our team we are hiring!🐱

⚡ Alice & Bob’s CEO @PeronninTheau joined @nvidia's Jensen Huang and other quantum leaders on stage yesterday at #GTC25! ⚛️ 🤝 This seminal panel brought together top voices from our field to tackle the biggest questions from timelines to impact to the road ahead. 🌎  Our top takeaways ⬇️ 🔷 Finding breakthrough applications will be key. The first wave will most likely come in areas like chemistry and materials science, where quantum can tackle problems classical computers can’t. But these are not a given. As Théau Peronnin said, developing new quantum algorithms and improving hardware will be crucial in making these happen. 🔷 Different approaches, same endgame.🎯 Each quantum method has its trade-offs, but everyone agreed on the key ingredients for success. Speed, scalability and, above all, error correction will be the things that make the difference. At Alice & Bob, we're laser-focused on all three to achieve our goal of scientific utility by the end of the decade 🔬 🔷 Quantum computing is a journey. Quantum today was compared to the early days of classical computing, NVIDIA back in the 2000s, and even the space race. 👨‍🚀 But useful applications are moving closer. With our hardware-efficient cat qubits, we plan to bring the first impactful use cases with 200x fewer physical qubits! 🚀 Read our roadmap: #whitepaper-think-inside-the-box" target="_blank" rel="nofollow noopener">alice-bob.com/roadmap/#white… And if we’re sure of one thing, it’s that the journey is worth it. Just ask Jensen Huang, who announced Nvidia’s investment in integrating their GPUs with future quantum computers! 🖥️  Huge thanks to Jensen Huang and #GTC25 for having us. We hope to be back to continue the conversation next year! 🎙️ D-Wave, Atom Computing, SEEQC, Microsoft, Pasqal, Infleqtion, PsiQuantum, IonQ, Quantinuum, Quantum Circuits, Inc., Amazon Web Services (AWS), Rigetti Computing. #GTC25 #nvidia #quantumcomputing

Scientific progress isn’t a race, it’s a joint effort 🤝 That’s why we can’t wait for next week’s #APSSummit25, the biggest physics gathering on the planet! ⚛️ The Alice & Bob team will be heading out there to chat about our work, connect with our fantastic physics community, and of course, soak up the meeting’s legendary vibes. 😎 🎤 In dedicated talks, we’ll be diving into our latest research, including our new paper on Squeezed Cats - a technique that boosts the bit-flip lifetime of our cats by 160x and moves us closer to practical error correction (look out for the upcoming blog post for more on that 👀). More details on all our talks 👉 alice-bob.com/blog/alice-bob… And we won’t just be talking about cat qubits, we’ll be showing them too! 🐱 With @QuantumQM, we’ll be hosting live demos of our chip, Boson 4, at their booth! ⚡ Spots for the demo are limited, grab yours here: quantum-machines.co/events/aps-mar… If you’re heading to this year’s meeting, catch our talks and make sure to swing by our booth #847 to see us! #APSSummit25 #physics #quantumcomputing

Squeezing more oomph out of our cat qubits!

🔬 Behind every achievement, a journey… This International Women’s Week, we’re sharing 7 journeys in science from women at Alice & Bob. In the world of scientific research, individual women lead and shatter stereotypes. But as a community, we are still far from where we need to be when it comes to bridging the gender gap. On our blog, women at Alice & Bob recall their experiences navigating the worlds of science and deep tech. Their voices ignite a conversation we all need to keep having: how can we change this deep unbalance, call out inequalities when we see them, and build a future where women have the same incentives to succeed in their scientific career? ➡️ Read their stories here: bit.ly/3DopjZg #IWD2025 #womeninscience #quantumcomputing

Amazon (@awscloud) just announced their first quantum chip, Ocelot 👀, and we know you've been waiting for your Alice & Bob digest 😏 🔎 …Let's see how it compares to our technology. // 01. PURE vs HYBRID AWS also uses cat qubits, but with a twist: they pair them with transmons. Cats store the information, transmons handle error correction. 🐱 // 02. THE TRADE-OFF Cat qubits resist bit-flip errors by injecting photons, this is their superpower 💎. But pairing them with transmons weakens this protection. On the flip side, transmons are a more mature technology, helping AWS build larger chips faster. 🏗️ // 03. DIFFERENT ROADMAPS Our error-correction strategy is different. AWS’s hybrid approach still needs to correct both bit-flip & phase-flip errors. With our pure-cat approach, we aim to eliminate bit-flips, meaning we’d need about ten times fewer qubits than AWS to run useful quantum algorithms. ⚡ Curious? Check out Alice & Bob's roadmap: 👉 alice-bob.com/roadmap/ That said, AWS’s achievement is impressive! They demonstrated error correction on cat qubits. Google’s latest Willow chip had a 10x lower error rate, but AWS used 5x fewer qubits, a major step toward scalable quantum computing. 💡 Exciting times ahead. 🚀 #research #physics #quantumcomputing #AWS

🚀 We just raised €100 million... Now, it’s your turn to write the next chapter with us! Funding isn’t just about Alice & Bob's growth, it’s about the people who make that growth possible. 📢 We’re hiring, more than 20 roles across multiple teams, and we’re looking for bold thinkers ready to build, innovate, and scale with us. Why Join Us? 💡 🔹 Work on game-changing quantum technologies with top experts 🔹 Collaborate with an amazing team of engineers, scientists and business professionals 🔹Be part of a fast-growing deep tech scale-up driving real innovation 🔹Share your ideas and make an impact in a teamwork-driven culture 🔥 Ready to take the leap? Apply today or tag someone who should! 👉 Learn about our open roles, the life at Alice & Bob, and our incredible team: lnkd.in/d7g6Aufh Keep slidin' below as an appetizer for what you could be doing with us! 🫵 #hiring #physics #quantumcomputing #fundraising

We have just raised €100M! 💰🔥🥳😎⚡ Our Series B round was led by the amazing teams at Future French Champions, AVP, and @Bpifrance. 🙌 Huge thanks to our existing investors: @BreegaVC , @Elaia_Partners , and Supernova invest your unwavering belief in our vision! 🙏 Alice & Bob is about to trace the future of quantum computing. 🧠 This new funding will allow us to build our fourth and largest location to date, a 4,000m² research and production facility in Paris. An ambitious plan for our ambitious roadmap: bring to life the first useful quantum computer, Graphene. 🤝 Curious about what’s next? Check out our roadmap to 2030: alice-bob.com/roadmap/💡 So, what is so special about Alice & Bob’s technology? Thanks to our cat qubits, we will need “only” thousands of qubits where others would need millions. The cat qubit doesn’t just reduce the hardware requirements to build useful quantum computers, it makes them possible in an economically viable way. 🤓 And now - it’s time to turn quantum computers from cool science projects into practical tools that can change the world! ⚡🤠 #SeriesB #FundingAnnouncement #Quantumcomputing #Startup #VC

Very excited to chat about the future of Quantum with Jensen Huang and my esteemed peers at #GTC25 on March 20 ! 😺

Did you know about Dynamiqs? 🤔 Dynamiqs is a GPU-accelerated library for the differentiable simulation of quantum systems. In Python. And open-source. 🐍 At Alice & Bob, we build quantum computers 💻⚛️and their fundamental building blocks: qubits. But before stepping into the lab to stick tabs of superconducting metal onto sheets of sapphire, we study them through advanced quantum simulations. It’s something we do all the time. 🔬 However, simulating quantum systems is no easy task. 😓 Any physicist is familiar with the frustration of waiting for a simulation to finish while their coffee grows colder ☕️, colleagues head off and come back from lunch 🍽️, and their entire career flashes before their eyes. Simulating the time evolution of quantum systems is notoriously challenging. As system dimensions grow into the hundreds or input sweeps multiply, conventional methods quickly hit a wall. 🧱 That’s why we created Dynamiqs with the help of @USherbrooke, @Yale, @Inria, @Mines_Paris, and @ENS_ULM. Dynamiqs is an open-source Python library for simulating quantum time dynamics. By leveraging @nvidia's GPU acceleration, Dynamiqs is up to 60x faster than vanilla QuTiP for certain problems. ⚡️ It also offers powerful features like: - Differentiability ⭐️ - Batching support ⚒️ - Seamless compatibility with the Google JAX ecosystem 🤝 Ready to take your quantum simulations to the next level? 👉Read our blogpost: bit.ly/4fRfPn2 👉Check out Dynamiqs on GitHub: bit.ly/3YTe01X 👉Explore the documentation and get started: bit.ly/3Oh49yk #Python #OpenSource #QuantumComputing #GPUs