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Nord Quantique co-founder and CEO Julien Camirand Lemire described the company’s effort to encode error-correction redundancy in microwave photons stored in superconducting cavities, rather than relying on large numbers of physical qubits. In an interview published Oct. 31, 2026, he discussed prior GKP and Tesseract code demonstrations, a four-qubit system expected to enter operation this year, and a company roadmap targeting lower error rates by 2032. Those milestones and targets are company statements; the interview does not establish that the planned system is already operating or that the future error rates have been achieved.
Nord Quantique co-founder and CEO Julien Camirand Lemire has outlined the company’s plan to use microwave photons held in superconducting cavities to perform quantum error correction with less dependence on large qubit arrays. In an interview published by The Quantum Insider on Oct. 31, 2026, he discussed the company’s earlier GKP and Tesseract code demonstrations, a four-qubit system expected to enter operation this year, and a roadmap targeting error rates between 10⁻⁷ and 10⁻⁹ by 2032.
Lemire described Nord Quantique’s hardware as a bosonic-code approach: quantum information is encoded in microwave photons stored in superconducting resonators, also called cavities. A cavity can hold multiple photons, which the company says can provide redundancy for error correction without requiring every added layer of protection to come from a separate physical qubit. The approach is intended to reduce the hardware overhead associated with correcting errors, a major obstacle to building useful large-scale quantum computers.
The interview points to two demonstrations: a GKP qubit demonstration released in early 2024 and a Tesseract code demonstration released in 2025. Lemire said the GKP work addressed both X and Z error types on a single encoded qubit. He also said the company’s quantum error-correction gain has more than doubled since 2024. The report gives no underlying measurements or comparison details for that gain, so it cannot be independently evaluated from the interview summary alone.
Lemire said a four-qubit system is entering operation in 2026 and described a longer-term goal of reaching error rates from 10⁻⁷ to 10⁻⁹ by 2032. These are development plans and targets, not reported results showing those rates have already been reached. He also credited the Sherbrooke quantum ecosystem in Quebec with helping the company build its technology in a capital-efficient way. The interview contrasts Nord Quantique’s method with approaches that seek to reduce overhead by suppressing particular error channels.
Reducing the Cost of Error Correction
Quantum computers are vulnerable to noise, and error correction is needed to protect computations from faults. Conventional approaches can require many physical qubits to represent and protect one logical, error-corrected qubit. That added hardware demand can make systems harder and more expensive to scale. Nord Quantique’s proposal is to use photons within a cavity as part of the redundancy, potentially reducing how much protection must be supplied by adding physical qubits.
If the approach works at larger scales, it could offer hardware developers another route to fault-tolerant computing. But the interview does not establish that Nord Quantique has demonstrated a commercially useful system or that its overhead is lower under a common benchmark than competing designs. The four-qubit system and future error-rate targets are therefore important markers to watch, rather than proof that the scaling problem has been solved.
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From GKP Demonstration to Four Qubits
Nord Quantique was incorporated in 2020 as a spin-off from Quebec’s Sherbrooke research ecosystem, according to Lemire. The company is based in Sherbrooke and also has offices in Montreal. Its focus is on quantum hardware designed around error correction, rather than treating error management as a later addition to a processor built from conventional qubits.
The interview places the company’s work within the broader effort to reduce the overhead required for fault-tolerant quantum computing. Lemire described bosonic codes as a family of approaches using quantum states of light in resonators. He identified GKP grid states and the later Tesseract code as examples from Nord Quantique’s program. The report also mentions work by other companies on different strategies, but it does not provide comparable performance data across those systems.
“A type of qubit that is capable of running quantum error correction.”
— Julien Camirand Lemire, Nord Quantique co-founder and CEO
Performance Claims Still Need Detail
The interview does not provide the experimental data, test conditions or benchmark definitions behind Lemire’s statement that the company’s error-correction gain has more than doubled since 2024. It also does not specify the precise operational status, capabilities or results of the four-qubit system described as entering operation this year. The stated 2032 range of 10⁻⁷ to 10⁻⁹ is a roadmap target; the source does not define the relevant error metric or say that the target has been achieved.
It remains unclear how the company’s demonstrations compare with rival approaches under equivalent conditions, how the design will scale beyond the systems discussed, and what resources larger implementations will require. The interview is a company CEO’s account of the work, not an independent technical assessment of its performance.
Testing the 2026 System
The next stated milestone is the four-qubit system’s operation in 2026. Public results describing its performance would help clarify whether the demonstrations translate into a larger working system and how its error-correction gains are measured. Nord Quantique’s longer-term marker is its stated goal of reaching error rates between 10⁻⁷ and 10⁻⁹ by 2032. The source does not give dates for further publications or specify when the company will report progress toward that target.
Key Questions
What is Nord Quantique’s single-cavity approach?
The company uses microwave photons stored in superconducting cavities to encode quantum information. Lemire says multiple photons in a cavity can provide redundancy for error correction, reducing reliance on adding large numbers of physical qubits.
What are the GKP and Tesseract demonstrations?
They are examples of bosonic-code work discussed by Lemire. He said Nord Quantique demonstrated a GKP qubit in early 2024 and released a Tesseract code demonstration in 2025. The interview does not give detailed performance data for either result.
Is the four-qubit system already operating?
The interview describes the system as entering operation in 2026. It does not provide a precise start date or report results confirming its operating status.
Has Nord Quantique reached its 2032 error-rate goal?
No. The range of 10⁻⁷ to 10⁻⁹ by 2032 is presented as a company roadmap target. The source does not say that Nord Quantique has achieved those error rates.
Source: thequantuminsider.com
