Your role at C12 Quantum Electronics
- As part of the Quantum Measurement team at C12, you will measure and characterise spin qubit devices to achieve quantum operations.
- Work on optimising and automating the formation of double quantum dots coupled to microwave resonators
- Develop coherent control of spin qubits hosted in carbon nanotubes
- Collaborate with the theory team on the design and implementation of optimised readout schemes as well as 1-qubit and 2-qubit gates
- Optimise the design of the on-chip microwave architecture in order to maximise readout fidelity and qubit coupling, together with our nanofabrication team and RF engineers
- Maintain, specify and build DC and high-frequency measurement setups (hardware and software)
About you
- You have a PhD in physics, applied physics, electrical engineering or any related field
- You have a first experience in semiconductor/superconducting device measurements (low-noise electronic measurements, cryogenic techniques, quantum dot or circuit quantum electrodynamics experiments) - experience with spin qubits or superconducting qubits is preferred
- You have experience coding in Python and using version control systems
- You are able to distil and communicate scientific information effectively to a wider team
- You have strong communication skills in English (oral and written)
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What We Do
C12 is building reliable quantum computers.
The company is a spin-off from ENS launched in January 2020 by twin brothers Matthieu and Pierre Desjardins to supercharge the development of the lab’s promising new quantum technology.
Quantum computing has the potential to change our lives. But frequent errors limit the technology’s viability. We are tackling the fundamental issue: the nature of the hardware itself. We are tapping into the simplest material–carbon–to drive a technological breakthrough in the field. Unlike other quantum computers, we use carbon nanotubes as the fundamental building block of our processor. By combining the power of an ultra-pure material with an easy-to-manufacture semiconductor device, we are building a scalable platform for quantum computing.
Our executive co-founders bring a unique combination of scientific excellence and business skills to the company. Our team is made up of the world’s most accomplished experts in quantum electronics and carbon nanotube science. Our scientific advisors are renowned scientists and pioneers in spin qubits: Dr. Takis Kontos, Dr. Matthieu Delbecq and Dr. Jérémie Viennot.
In June 2021, C12 secured a $10 million seed round with funding from 360 Capital, Bpifrance (Digital Venture Fund), Airbus Ventures, BNP Paribas Développement, and Octave Klaba (OVHcloud), and additional grants from Bpifrance and the Ile-de-France Region.
We are leading quantum’s next material breakthrough, and we are just getting started. Silicon enabled the emergence of classical computing – it’s time for carbon to do the same for quantum !



