Paris-based startup C12 has unveiled its proprietary Pick & Place technology for the high-precision manufacturing of quantum processors based on carbon nanotubes.
Source: C12.This method enables the transfer of individual nanotubes onto silicon chips with micrometer precision in a vacuum or inert atmosphere. A key feature of this approach is the ability to pre-test and select nanotubes before their integration into the chip, addressing one of the main challenges in quantum equipment—the variability of qubit characteristics.
According to the company, by optimizing and partially automating the process, engineers assembled 50 devices in the last four weeks. In comparison, it took an entire year to assemble a similar number of components in 2025.
The Pick & Place technology also allows for the creation of multi-qubit structures. As proof, C12 demonstrated a High-Density chip that combines 17 quantum devices on a single substrate.
“We have adapted advanced semiconductor packaging principles to the nanoscale. This opens up possibilities for mass production of quantum chips,” said C12's CTO Matthieu Desjardin.
This development is part of the company's roadmap, published in April 2026. The strategy aims to transition from the first logical qubit to systems comprising 100,000 physical qubits by 2033. C12 emphasized that establishing a reproducible manufacturing base is critical to achieving these goals.
Source: C12.As a reminder, on June 1, D-Wave Quantum revealed plans to create a fault-tolerant quantum computer with 100 logical qubits by 2032.