Q2B26 Copenhagen | Lydia Baril, Head of Innovation and Partnerships, C12

Q2B26 Copenhagen | Lydia Baril, Head of Innovation and Partnerships, C12

Title history
  • Q2B26 Copenhagen | Lydia Baril, Head of Innovation and Partnerships, C12 — observed on 20261016-0104 UTC (PSI archive)

by Lydia Baril · View the channel on PSI

Applied Sciences & Engineering Economics & Finance KJBusiness and ManagementKJDBusiness innovation
🎙 Lydia Baril 👥 6K 📅 October 12, 2026 ⏱ 15 min 👁 24 📄 original study 🧭 2026-10-16
Available in: English (current) Français

Keywords

quantum computingspin qubitscarbon nanotubescryogenicsscalability

Summary

Lydia Baril, Head of Innovation and Partnerships at C12 Quantum Electronics, presents the company’s approach to building quantum computers based on carbon nanotube spin qubits. She highlights the unique use of carbon nanotubes as the qubit host material, providing a low-noise environment due to the absence of nuclear spins in the carbon-12 isotope. The qubits are suspended above noisy substrates, further improving coherence. C12 leverages standard microelectronics nanofabrication, enabling fast iteration with an in-house fab. The talk covers advantages of spin qubits, such as small size, high density, and operation at higher temperatures (300 mK) reducing cryogenic overhead. A key feature is the use of a cavity as a quantum bus, allowing all-to-all connectivity, which is rare in spin qubit systems. Baril shows a chip with 17 carbon nanotubes and describes collaborations with Thales and Air Liquide, including a demonstration of quantum speedup on a tracking problem and a hybrid classical-quantum atomic layer deposition project. The roadmap targets a product next year, with scaling to 6,000 qubits per square meter and a compact system. The presentation concludes with a call for recruitment.

182 words

Critical Evaluation

Value of the Information & Strength of the Argument

The talk provides valuable insights into a less mainstream quantum computing approach, emphasizing scalability and low noise. The argumentation is coherent, with concrete technical details and experimental results. The claim of record coherence times is credible given the material advantages. The demonstration with Thales and the hybrid project with Air Liquide add practical validation. However, the presentation is inherently promotional, and the collaborative results are not deeply detailed, limiting the depth of evidence presented.

Scientific Rigor, Source Quality, Title Accuracy

The talk references a publication with Thales and a paper with Air Liquide, but specific URLs are not provided. The only external link in the description is the conference page, which serves as the presentation’s source. The title accurately reflects the content, and the speaker is an expert from the company, ensuring technical accuracy. However, the lack of independent references reduces the overall rigor. The conference setting implies some peer review, but the promotional nature means claims should be interpreted with caution.

171 words

Title / Content Match

The title accurately describes the content: a presentation by Lydia Baril from C12 at the Q2B26 conference in Copenhagen.

Quality & Reliability

7/10

The speaker is a company representative and the talk has a promotional tone, but it is highly technical and includes specific claims backed by published work with collaborators like Thales. The technical details are credible, yet inherent bias and lack of independent verification lower the score.

Key Moments

Markers derived by PSI from the transcript: the creator did not define chapters.

Cited Sources

  • Q2B Conference Website — The presentation page for the Q2B26 Copenhagen conference where this talk was delivered.

Contribution & Novelties

C12’s approach using carbon nanotubes for spin qubits is distinctive compared to silicon-based spin qubits, offering a purer material with potentially longer coherence times and reduced noise. The high all-to-all connectivity via a cavity resonator is also uncommon in spin qubit systems, potentially simplifying error correction and algorithm implementation. The talk presents early results with industrial partners, indicating practical relevance.

Pour aller plus loin :

  • Carbon nanotube quantum dot — Overview of using carbon nanotubes as quantum dots, relevant to C12’s qubit design.
  • Spin qubit — General background on spin-based qubits in semiconductor platforms.
  • Quantum error correction — Key topic for scaling, briefly mentioned in the talk’s focus on full-tolerant quantum computers.

112 words

Radar Profile

The radar profile shows high technical level and good information quality, but moderate quantity and reliability, reflecting the specialized but promotional nature of the presentation. The scores are balanced, with a slight dip in reliability due to corporate bias.

Reliability 7/10