Creating C12 processors

Why carbon nanotubes

Carbon nanotubes give us an ideal foundation for building quantum processors. We fabricate them by growing isotopically pure carbon nanotubes, atom by atom, using chemical vapor deposition. By using the 12C isotope of carbon, we remove noise caused by nuclear–electron spin coupling. This exceptional isotopic purity is central to our performance - and it’s what inspired our name, C12.
From nanotube to qubits
After growth, we use a non-invasive method to select candidate nanotubes with the desired semiconducting gap and minimal defects to build our qubits. The result is an ideal host material for a spin qubit with minimal intrinsic decoherence.
Using our patented nano-assembly technology, we integrate ultra-pure nanotubes onto silicon chips to form quantum circuits. During this process we ensure the nanotubes remain free from any incidental contamination.
With this technique, the devices we create are made up of carbon nanotubes connected between electrical contacts, suspended above an array of electrodes. This ensures the nanotubes are maximally isolated from the environment, drastically reducing decoherence due to charge and mechanical noise. Our nano-assembly technology is highly scalable, with the potential capacity to fabricate thousands of qubits per hour. The footprint of the nanotube qubits is small enough to embed hundreds of thousands of qubits on a single chip.
C12’s architecture is built on a series of technological breakthroughs that enable a fast, utility-scale, fault-tolerant QPU. Among them are exceptionally high-quality carbon nanotube hosted spin qubits and a quantum bus supporting high connectivity.
Combined with the high speed of a solid-state system (no moving parts), this approach supports efficient error correction without requiring unfeasible qubit counts.
Combined with the high speed of a solid-state system (no moving parts), this approach supports efficient error correction without requiring unfeasible qubit counts.
C12 is building next generation quantum computers by crafting the highest quality qubits, using ultra-pure materials and perfected processes to control every individual electron.
From a single nanotube to full-wafer fabrication, our technology bridges quantum precision and semiconductor scalability, providing a practical path to make large-scale quantum processors a reality.
From a single nanotube to full-wafer fabrication, our technology bridges quantum precision and semiconductor scalability, providing a practical path to make large-scale quantum processors a reality.