Silent Waves

❄️ The Argo and Zephyr are heading north! ❄️ From August 25–28, our Silent Waves team will be in Gothenburg, Sweden for Superconducting Qubits & Algorithms, and we've got your cryogenic readout needs covered from A to Z: ✴️ Argo: our compact, pre-tuned and cryogenically tested Josephson TWPA ✴️ Zephyr: our integrated TWPA + pump coupler, designed to reduce insertion loss, simplify the readout chain and make installation easier. Visit us at booth 21 to see both devices up close and discuss your readout requirements with our team. 📅 Would you like to schedule a meeting? Book a time using the link in the comments below. #SQA2026 #QuantumComputing #QuantumHardware #SuperconductingQubits #Cryogenics #QubitReadout #TWPA #QuantumEngineering #CryogenicEngineering #MicrowaveEngineering #SuperconductingCircuits Prof. Dr. Stefan Seegerer | Soren Hein | Jan Goetz | IQM Quantum Computers | Jonathan Yates | Luca Planat | Andrea Busch | Sabrina Maniscalco | Aziza Almanakly | Andreas Wallraff | Sandbo Chang | Simon Lang | Christian Kraglund Andersen | Antti Vepsäläinen | Pasquale Scarlino | David Karpuk

Our team spends a lot of time traveling to meet customers around the world. Today, however, we're especially happy to be attending an event right in our own backyard. The Leti Innovation Days #LIDS are one of France's premier deep-tech events, bringing together leaders in semiconductors, microelectronics, and emerging technologies. This year, Silent Waves is proud to be exhibiting in the startup area with Université Grenoble Alpes, alongside our friends at DIAMFAB. Quantum technologies didn't appear in Grenoble Alpes by chance. The region has spent decades building an ecosystem where world-class research, semiconductor expertise, and advanced manufacturing come together. It's an environment that allows ambitious technologies to move from the laboratory to industry. As Silent Waves continues to grow, we're proud to be growing here. This year marks an exciting new chapter for our company as we expand our capabilities and prepare for the next stage of industrial development. Building quantum hardware isn't just about designing better devices—it's about creating the manufacturing foundations that will support the quantum industry for years to come. We're proud to represent Grenoble's expertise when we travel abroad, and even prouder to welcome the global deep-tech community to the place we call home. Thank you to CEA-Leti for giving us the opportunity to be part of this fantastic event. If you're attending Leti Innovation Days, come say hello—we'd love to meet you. Jean-Philippe Gendre | Sylvain COLOMB | Jean-Michel Goiran | Invest In Grenoble Alpes | Grenoble-Alpes Métropole | CEA | CNRS | CNRS Innovation | Institut Néel CNRS | Ville de Grenoble | Pascal Viaud 費歐德 | Sharon Rehbinder | Linksium

📅 Is June the busiest month of the year for your company? It certainly feels that way for us! Over the past few months, we've been rebuilding our website to make technical information easier to access, improving the tools customers use to evaluate our products (---> We'll put the link in the comments below 👇), and preparing for a busy season of events and conversations. Those conversations will focus on a topic that's close to our hearts: how scalable qubit readout can help unlock the next generation of quantum computers. This month, you'll find the Silent Waves team at France Quantum, Economist Impact SE Europe Events 2026 Commercialising Quantum Global, CEA-Leti #LIDS Leti Innovation Days, and the University of Glasgow Emerging Quantum Technologies Summer School. If you'll be attending any of these events, we'd love to connect. Whether you're building quantum processors, developing enabling technologies, or exploring the future of scalable quantum systems, let's start a conversation. The quantum ecosystem is growing quickly, but it's still small enough that a single discussion can spark a new idea, partnership, or opportunity. So, where will we see you this month? Clara de Marolles (Moschetti) | Laura Chandler | Helen Ponsford | Jean-Philippe Gendre | Jean-Michel Goiran | Stavroula Kapoulea | Rebecca Malamud | Niccolò Coppola | Laurent PETIT

Huge congratulations to Quobly on the announcement of their Series A round! At Silent Waves, it is incredibly rewarding to see one of Grenoble’s quantum pioneers reach this milestone and continue to demonstrate the strength of our local deep-tech ecosystem. As fellow spin-outs from the Grenoble Alpes research landscape, CNRS Institut Néel CNRS, and neighbors in the same innovation community, we are proud to see the technologies emerging from our region receive growing international recognition and support. This achievement is also a testament to the broader ecosystem built over years by researchers, engineers, institutions, startups, and industrial partners working together to advance quantum technologies in France and Europe. QuantEdu | Université Grenoble Alpes | Grenoble INP - Phelma We are excited to follow the next chapter of quantum computing technology and to see how the Grenoble quantum ecosystem continues to shape the future of the industry. Congratulations again to the entire Quobly team on this major milestone! Bpifrance | Air Liquide | STMicroelectronics | STMicroelectronics France | SEALSQ | Invest In Grenoble Alpes https://lnkd.in/eDap2a54

🚀 À l’occasion du « Forum européen des technologies de calcul, du quantique et des semi-conducteurs » et des annonces du Président de la République autour de la Stratégie Nationale Quantique, nous sommes fiers de contribuer à l’excellence française dans les technologies quantiques grâce au soutien de #France2030. Merci à l’État pour son accompagnement dans nos projets dédiés au développement et à l’industrialisation de technologies de lecture cryogénique pour ordinateurs quantiques supraconducteurs. Ces innovations visent à améliorer la fidélité de lecture des qubits tout en préparant le passage à des architectures quantiques plus compactes, plus performantes et plus scalables. 💡 Depuis Grenoble et l’écosystème scientifique de l’Auvergne-Rhône-Alpes, nous agissons pour renforcer la souveraineté technologique française et européenne dans le domaine du calcul quantique, tout en accélérant l’industrialisation de briques technologiques critiques pour les processeurs quantiques de demain. Merci à l’ensemble des partenaires scientifiques, institutionnels et industriels qui participent à cette dynamique collective. ➕ Pour découvrir toutes les annonces 👉 https://lnkd.in/eG7Sgy_K ➕ Pour en savoir plus sur #France2030 👉 https://lnkd.in/dYjMFkra Emmanuel Macron | Sébastien Lecornu | Catherine Vautrin | Philippe Baptiste | Anne Le Hénanff | SGA du ministère des Armées et des Anciens combattants | Ministry of Economy | Ministère de l'Enseignement supérieur, de la Recherche et de l'Espace | Secretary general for investment | Bruno Bonnell | Géraldine Leveau | Massis Sirapian | Camille Buisson | Loïc Le Loarer | Raphaël Bouganne | Bpifrance | ANR, the French National Research Agency | CNRS | CEA | #QuantumFrance | Inria | Direction Générale des Entreprises

We pride ourselves on building scientifically sound technologies. That means staying close to the latest research and understanding our customers’ challenges from a physics perspective, not just a product one. This week, we attended Quantum Matter 2026 Barcelona to listen to leading voices in quantum research and better understand where real bottlenecks are emerging. A few takeaways: - Superconducting qubits remain the dominant modality. Despite the diversity of approaches, they continue to attract the most sustained industrial and research investment. Readout is firmly on the critical path. - Experts like Alexandre Blais highlighted that improving readout fidelity is now essential to unlocking overall QPU performance. TWPAs are becoming standard in superconducting readout chains. In most advanced superconducting platforms, they are now a baseline component. By improving quantum efficiency and enabling high-density multiplexing, they have moved from experimental devices to essential building blocks. More broadly, the conversation is evolving. The focus is shifting from pushing qubit performance in isolation to addressing system-level constraints, where enabling technologies like cryogenic amplification play a decisive role. Because scaling isn’t just about adding more qubits. 👉 It’s about making the whole system work reliably.   Victor El Homsy | Qilimanjaro Quantum Tech | Maybell Quantum |Bluefors C12

On World Quantum Day, we’re doing what we do best: building quantum hardware --> for quantum systems --> tackling quantum problems. For a long time, progress in quantum computing was measured by qubit count. Today, that is no longer enough. As systems scale and quantum computing moves toward practical use as a service, the real question is becoming clearer: where are the bottlenecks? For superconducting platforms, two constraints stand out: • cryogenic space • readout fidelity Adding more qubits is not the hardest part anymore. 👉 Making the system work reliably is. 👈 We would be interested to hear how others are approaching the readout bottleneck. #WorldQuantumDay #QuantumComputing #SuperconductingQubits #SystemIntegration Olivier Ezratty | Richard Curtin | Robert Sutor | Cecile M. Perrault | Satyavolu Papa Rao

We had the pleasure of speaking with George Schwartz at the American Physical Society March Meeting. In a recent Quantum Computing Report by GQI article by GQI, he discusses our newest product, the Zephyr: https://lnkd.in/eeMCtqHS Our conversation kept coming back to two questions that are becoming central across the industry: - How do we reduce the footprint of cryogenic qubit amplification systems? - How do we scale production to meet growing demand? These are not future problems. They are already shaping how quantum systems are designed. At Silent Waves, our view is straightforward: - Integration will play a key role. More compact architectures, with devices like the TWPAI, reduce footprint, complexity, and loss at millikelvin. - Scaling requires dedicated infrastructure. Pilot lines for cryogenic hardware are essential to deliver consistent performance at volume. Luca Planat | André M. König | Doug Finke

Our team came to American Physical Society Global Physics Summit in Denver expecting to see familiar faces, have ongoing discussions, and steady interest in TWPAs. What we didn’t expect was how much the conversation has shifted. Our booth was never empty. The conversations didn’t stop. And one idea kept coming back: 💡❄️ Without better cryogenic amplification, quantum just doesn’t scale.   Two defining moments for Silent Waves: 1. A talk that resonated and a room that was captivated Our CSO, Nicolas Roch, shared his perspective on the future of TWPA technology and presented high fidelity, multiplexed qubit readout results using our TWPAI, without isolators. The reaction made it clear that TWPAI is not theoretical anymore, but aligned with how quantum systems need to evolve. 2. A new product enters the field We launched the Zephyr, integrating TWPA and directional coupling into a single compact device. Less footprint. Fewer losses. Simpler integration.   What changed is clear: 1️⃣ TWPAs are no longer lab-built devices. They are expected, evaluated, and compared. 2️⃣ The discussion has matured: 3WM vs 4WM, integration constraints, scalable architectures, and who can actually deliver at volume. 3️⃣ Across the board, from large quantum players to academic labs, one expectation stands out: reliable TWPAs. Not just performance, but devices that can be delivered in volume, installed, and trusted across systems. At Silent Waves, performance is the baseline. Reliability is what sets us apart. - Reliable supply - Consistent device performance - Long term customer support Our approach to 4 wave mixing is part of that effort. It enables simpler system integration, more design freedom, and reduced complexity. It also benefits from a broader supplier ecosystem, giving customers more flexibility and reducing long term dependency on a single source. Every device is cryogenically tested before shipping. Each system is delivered with a full specification sheet. Bandwidth is tailored to customer needs. And we stay engaged to ensure performance in real conditions. Because the value of a TWPA is not just how it performs it is also in the confidence that it will work as expected. TWPAs are no longer a topic of exploration. They are becoming part of how quantum systems need to be built. Luca Planat | Baptiste Planat | Victor El Homsy | Jonathan Yates | Archana Kamal | Bekim Fazliji | Arpit Ranadive | Andrea Busch |

🚀🚀 Two new product announcements today: our Zephyr amplifier and our 2026 iconic APS conference socks. Guess which one is quantum efficient and which one is super comfy? 🧦🧦 The Zephyr is the newest little guy to join our family! A two-in-one amplifier, It combines our signature Traveling-Wave Parametric Amplifier (TWPA) with a pump coupler. In practical terms, it shortens the path from qubits to the first stage amplification, preventing losses and improving overall readout performance. This means: • Higher quantum efficiency • Half the footprint of a traditional TWPA + coupler setup • Easier installation inside the cryostat By integrating the TWPA and pump coupler into a single device, the Zephyr reduces insertion losses between the signal source and the amplifier while simplifying the cryogenic readout line. Reducing component count and system footprint will be essential for scalable architecture with a high qubit count. The Zephyr reflects a broader effort at Silent Waves to streamline cryogenic readout systems without compromising performance or ease of installation. Our devices are designed to integrate into existing quantum computing systems without requiring complex additional peripherals. As with all Silent Waves amplifiers • Each Zephyr unit is fully cryogenically tested before shipment. • Each unit is delivered with a detailed specification sheet based on its measured performance • The amplification bandwidth is tailored to each customer’s readout requirements. At Silent Waves, one of the things we take the most pride in is the satisfaction of the teams using our devices. Beyond the hardware itself, a large part of the value we aim to provide lies in the support that follows installation. We work closely with our customers to ensure their systems perform as expected and that the amplifier integrates smoothly into their experimental setup. If you are attending the American Physical Society Global Physics Summit (March Meeting) in Denver, come meet us at Booth 715 to fetch a pair of wavy socks, see the device and speak with the team (or the other way around). The amplifiers are cryogenic, but the socks will keep you warm 😊🧦 Luca Planat | Nicolas Roch | Baptiste Planat | Jonathan Yates | Victor El Homsy | Andrea Busch | André M. König | George Schwartz | Matt Swayne