# C12: Computer hardware, Paris, France > C12: C12 Quantum Electronics is a Paris-based startup founded in January 2020, specializing in scalable quantum processors using carbon nanotubes. Source: https://millionrounds.com/startup/c12 (Millionrounds; every figure on the page links to its filing or article) France · [Computer hardware startup](https://millionrounds.com/companies) # C12 C12 Quantum Electronics is a Paris-based startup founded in January 2020, specializing in scalable quantum processors using carbon nanotubes. Funding reported Last round: Undisclosed round Computer hardware Paris, France Company summary - **Founded:** 2020 6 years old - **Team:** 84 51 to 200 people - **Funding reported:** 31.9M as listed, currency not stated - **Last round:** Undisclosed round Jun 2024 How sure we are - ✓ **Listed** We know it exists and what it does - 2 **Funding reported** A company dataset reports a raise - 3 **Observed** A filing or a dated announcement confirms a round No round for C12 has been confirmed by a filing or an announcement yet, so nothing here counts toward an investor's record. [How we decide](https://millionrounds.com/methodology) ## About C12 C12 Quantum Electronics is a Paris-based startup founded in January 2020, specializing in scalable quantum processors using carbon nanotubes. The company aims to create utility-scale quantum computers by leveraging advanced materials science and innovative manufacturing techniques. C12 was established as a spin-off from the Physics Laboratory of the École Normale Supérieure and is led by twin brothers Pierre and Matthieu Desjardins. C12 develops CNT-based spin-qubit processors that offer enhanced qubit stability and lower error rates. Their Callisto Quantum Emulator is a cloud-based tool that allows developers to simulate quantum algorithms. The company has built a unique quantum chip production line and plans to make its quantum processors available on the cloud by the end of 2025, with physical chips expected to be sold in 2026. C12 also provides services to help industrial clients in the chemical and energy sectors integrate quantum computing into their operations. ## What company datasets say C12 raised Funding, as reported Reported in all **31.9M** in the source's currency Rounds **5** Last round **Undisclosed round** Last round size **19.8M** Last round date **Jun 2024** Investors listed **11** ## Founders and team From C12's own website: 5 founders, 38 on the team. **Pierre Desjardins** Co-founder & CEO **Dr. Matthieu Desjardins** Co-founder & CTO **Dr. Jérémie Viennot** CNRS resarcher at Neel - Co-founder **Dr. Matthieu Delbecq** Associate Professor at Sorbonne Université - Co-founder **Dr. Takis Kontos** CNRS Research Director at LPENS - Co-founder - **Dr. Lydia Baril** Head of Innovation & Partnerships - **Dr. Natalia Solovieva** Head of Nanofabrication - **Evan Tanner** Head of Product - **Julien Sarry** Head of Engineering - **Juliette Ginies** Head of Operations - **Louis Virey** Head of CNT Engineering - **Nicolas Hauseux** VP of software development - **Anaïs Civario** HR intern - **Andrea Mammola** PhD - Research Engineer - **Baya Hammadi** Senior Facility Manager - **Biswash Ghimire** Senior Software Engineer - **Clément Roux-Spitz** Research Engineer - Optics - **Dr. Benoît Neukelmance** Senior Quantum Measurement Engineer - **Dr. Chotivut Tangchingchai** Senior Nanofabrication Engineer - **Dr. Evan Telford** Senior Electrical Characterization Engineer - **Dr. Felix Nicolas Krauth** Senior Quantum Measurement Engineer - **Dr. Jean-Loïs Bello** Senior CNT Research Engineer - **Dr. Mohammadmehdi Torkzadeh** Senior Nanoassembly Engineer And 20 more on the team. ## On 3 portfolio pages Investors who name them - [Varsity Ventures](https://millionrounds.com/fund/varsity) - [Moondust Ventures](https://millionrounds.com/fund/moondust-ventures) - [Jezby Ventures](https://millionrounds.com/fund/jezby-ventures) Each firm lists C12 on its own website. That is the firm's claim, a weaker thing than a round we watched, but a named source. ## The company, in detail What they build Known for hardware quantum circuits emulation nanoassembly control signals manufacturing quantum speedup quantum materials nanofabrication quantum normalization quantum system design quantum cloud computing quantum error correction information technology & services quantum emulators quantum decoherence reduction quantum architecture Built with from their website Pandora FMS Google Tag Manager Amazon CloudFront Google Sheets OVHcloud edX Mistral AI Lever Layers Autodesk Fusion Manage +8 more Ansible Spendesk Cloudflare DNS Google Workspace CloudFlare Electron Viewport Meta LinkedIn Ads - **Sector:** Computer hardware - **Industry code:** NAICS 54171, 334413, 334111, SIC 3571 - **Region:** Ile-de-France - **Full record:** [Every detail in the company directory](https://millionrounds.com/directory/c12-quantum-electronics) ## Computer hardware in France Startups like it - [**Quobly** Grenoble · founded 2022 *Raised*](https://millionrounds.com/company/quobly) - [**Arago** Paris · founded 2024](https://millionrounds.com/startup/arago) - [**UPMEM** Grenoble · founded 2015](https://millionrounds.com/startup/upmem) - [**MC3** Villepinte · founded 1995](https://millionrounds.com/startup/mc3) - [**Isentroniq** Saint-Germain-en-Laye · founded 2025](https://millionrounds.com/startup/isentroniq) - [**Compufirst** Montpellier · founded 2006](https://millionrounds.com/startup/compufirst) - [**Steepulse** Grenoble · founded 2014](https://millionrounds.com/startup/steepulse) - [**hello RSE** Bordeaux · founded 2018](https://millionrounds.com/startup/hello-rse) ## Is this your company? 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