Research Engineer in Nanoscience
C12 Quantum Electronics
Paris, France
Posted on Mar 6, 2025
C12 develops quantum computers, to solve highly complex computing tasks, currently out of reach of even the most powerful supercomputers. Building a quantum computer still needs innovators ready to tackle exciting challenges. C12’s founders are convinced that only a new material for the qubit will bring a technological breakthrough. C12 uniquely uses carbon nanotubes as the fundamental building blocks of its quantum processor. This high-purity material minimises errors, radically improves performance and reduces hardware overhead for fault-tolerant computing. Combined with well-established semiconductor techniques, carbon nanotubes will help scale quantum computing, just as silicon revolutionised classical computing.
Our unique & innovative quantum computing technology enables us to address use cases, solving intractable problems our industrial customers are facing.
Founded in 2020, C12 is a fast-growing start-up, who recently raised EUR 18 million in 2024 to further its research in its own lab in the heart of Paris (Panthéon).
Your role at C12 Quantum Electronics
- As part of the nanoassembly team at C12, you will help develop and operate the custom nano-assembly vacuum setup
- Your job will involve:
- Operation and continuous improvement of the nano-assembly vacuum setup.
- Design and validate experimental protocols to optimise the success rate of the nano-assembly (including mechanical, electrical and chemical processes).
- Optically inspect, clean and characterize silicon chips (probe station, SEM, …).
- Work with the software team to improve the control software, and the storage and analysis of your data in our internal database.
to transfer ultra-pure carbon nanotubes onto microchips in order to create qubits.
About you
- Required Qualifications
- Engineering diploma or Master's degree in Electrical Engineering, Physics, Applied Physics, Materials Science or other related field; a PhD or one past work experience is also appreciated
- You love experimental lab work
- You have some experience in hardware and experimental setup design and fabrication
- You like collecting, organising and analysing your data, programming skills are a plus
- You are detail-oriented and organized in your work and documentation style
- You are diligent, independent, result-oriented and have a problem-solving attitude
- Very good communication in English (verbal and written) is essential
- Preferred Qualifications
- Experience in semiconductors
- Experience with high vacuum systems
- Experience in carbon nanotubes
- Experience in materials characterization techniques (SEM, TEM, AFM, probe station)
- Experience with embedded systems and hardware/software integration
You should join us if...
You want to contribute to achieve landmark results in quantum computing and participate in setting up the world-first architecture of a five-qubit chip with all-to-all connectivity between spin qubits, making a difference in the emerging quantum technologies
You want to work within a 50-people team with various backgrounds in physics, chemistry, mechanical engineering, electrical engineering and software engineering to create a revolutionary quantum computing processor
You want to thrive in an exceptional scientific environment with several industrial and academic partners.
You share our values (excellence, scientific integrity, diversity, curiosity, and care) and want to help us define our product-focused culture and ambition to accelerate.
C12’s unique technology
At C12, a qubit, the fundamental functional unit of a quantum computer, is built from an isotopically ultra-pure 12C nanotube suspended above a silicon chip containing control electrodes and a quantum communication bus. Our spin qubits hold great promise in terms of individual control and manipulation as well as for the circuit architecture. A suspended isotopically-pure 12C nanotube holds great promise in terms of stability, as it reduces all sources of decoherence (charge noise, nuclear spin noise and phonon relaxation).
C12 encourages all who feel qualified to apply. Recruitment decisions are based solely on qualifications, skills, knowledge and experience. Applications from women are particularly welcomed.