--- title: Julien Camirand Lemire (Nord Quantique): One Cavity, One... description: Nord Quantique CEO Julien Camirand Lemire describes the company's bosonic code approach, which traps microwave photons in a single superconducting cavity to... canonical: https://daily.dev/posts/julien-camirand-lemire-nord-quantique-one-cavity-one-error-corrected-qubit-xi6r5qazd twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Julien Camirand Lemire (Nord Quantique): One Cavity, One Error-Corrected Qubit | daily.dev og:description: Nord Quantique CEO Julien Camirand Lemire describes the company's bosonic code approach, which traps microwave photons in a single superconducting cavity to... og:url: https://daily.dev/posts/julien-camirand-lemire-nord-quantique-one-cavity-one-error-corrected-qubit-xi6r5qazd og:image: https://api.daily.dev/og/posts/XI6r5QaZd.png og:image:alt: Julien Camirand Lemire (Nord Quantique): One Cavity, One Error-Corrected Qubit og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Julien Camirand Lemire (Nord Quantique): One Cavity, One Error-Corrected Qubit **[The Quantum Insider](https://daily.dev/sources/thequantuminsider)** · 22 min read · 0 upvotes · 0 comments ## Summary Nord Quantique CEO Julien Camirand Lemire describes the company's bosonic code approach, which traps microwave photons in a single superconducting cavity to achieve quantum error correction without needing hundreds of extra physical qubits. The company's quantum error correction gain has more than doubled since 2024, from a factor of 1.1 to over two, with no post-selection involved. A four-qubit system enters operation this year, and current gate operations run at roughly three nines fidelity. Nord Quantique targets logical error rates of 10^-7 to 10^-9 by 2032, aiming to fit over 2000 logical qubits into 10 square meters, and is in discussions for its first system sale. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What is Nord Quantique's bosonic code approach to quantum error correction? Nord Quantique traps microwave photons inside a single superconducting cavity or resonator to achieve quantum error correction redundancy without adding more qubits. This differs from standard approaches needing 100 to 1,000 extra physical qubits per logical qubit. Their GKP qubit (demonstrated in 2024) corrects both X and Z errors in one cavity, and the Tesseract code (2025) extends this to multimode cavities storing photons at different frequencies. _Engineers weighing qubit-overhead tradeoffs can follow bosonic code progress alongside other error-correction approaches on daily.dev._ ### What quantum error correction gain has Nord Quantique achieved with its GKP qubit? The quantum error correction gain, a metric for how much hardware performance improves with error correction applied, started at just 1.1 in the 2024 demonstration and has since more than doubled to beyond two. This was achieved with 100% error correction and no post-selection, and gate fidelity on a single cavity is currently around three nines. _Readers tracking real progress in error-corrected qubit performance can follow updates like this on daily.dev._ ### When does Nord Quantique expect to reach practical quantum error rates for useful computing? Nord Quantique targets logical error rates between 10^-7 and 10^-9 around 2032, using multimode quantum error correction codes built within single superconducting cavities. The company also plans to scale toward more than 2000 logical qubits fitting within 10 square meters, with a four-qubit system entering operation this year for early partner access. _Those evaluating quantum hardware roadmaps can keep an eye on milestones like this on daily.dev._ ## Similar posts on daily.dev - [Nord Quantique Advances Quantum Error Correction with Sub-0.1% SPAM Errors](https://daily.dev/posts/nord-quantique-advances-quantum-error-correction-with-sub-0-1-spam-errors-gnpuc1h1e) · The Quantum Insider · 0 upvotes · 0 comments - [A new ion-based quantum computer makes error correction simpler](https://daily.dev/posts/a-new-ion-based-quantum-computer-makes-error-correction-simpler-nf3k08gdx) · MIT Technology Review · 0 upvotes · 0 comments - [Quantum error correction goes well beyond breakeven](https://daily.dev/posts/quantum-error-correction-goes-well-beyond-breakeven-jc49e4iou) · Ars Technica · 0 upvotes · 0 comments - [Quantum Error Correction goes FOOM](https://daily.dev/posts/quantum-error-correction-goes-foom-72hmccwyn) · Algorithmic Assertions · 0 upvotes · 0 comments --- Tags: [#quantum-computing](https://daily.dev/tags/quantum-computing) [View this post on daily.dev](https://daily.dev/posts/julien-camirand-lemire-nord-quantique-one-cavity-one-error-corrected-qubit-xi6r5qazd) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Julien Camirand Lemire (Nord Quantique): One Cavity, One Error-Corrected Qubit","url":"https://daily.dev/posts/julien-camirand-lemire-nord-quantique-one-cavity-one-error-corrected-qubit-xi6r5qazd","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/julien-camirand-lemire-nord-quantique-one-cavity-one-error-corrected-qubit-xi6r5qazd"},"datePublished":"2026-10-31T09:16:11.281Z","dateModified":"2026-10-31T09:16:39.392Z","description":"Nord Quantique CEO Julien Camirand Lemire describes the company's bosonic code approach, which traps microwave photons in a single superconducting cavity to...","image":"https://media.daily.dev/image/upload/s--58gMhC4P--/f_auto/v1722860399/public/Placeholder%2012","thumbnailUrl":"https://media.daily.dev/image/upload/s--58gMhC4P--/f_auto/v1722860399/public/Placeholder%2012","isAccessibleForFree":true,"articleSection":"The Quantum Insider","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"The Quantum Insider","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/7b14a6b34c1b464c9e8a88d9a0dac951","url":"https://daily.dev/sources/thequantuminsider"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/julien-camirand-lemire-nord-quantique-one-cavity-one-error-corrected-qubit-xi6r5qazd","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"quantum-computing","timeRequired":"PT22M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"The Quantum Insider","item":"https://daily.dev/sources/thequantuminsider"},{"@type":"ListItem","position":3,"name":"Julien Camirand Lemire (Nord Quantique): One Cavity, One Error-Corrected Qubit"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/julien-camirand-lemire-nord-quantique-one-cavity-one-error-corrected-qubit-xi6r5qazd#faq","mainEntity":[{"@type":"Question","name":"What is Nord Quantique's bosonic code approach to quantum error correction?","acceptedAnswer":{"@type":"Answer","text":"Nord Quantique traps microwave photons inside a single superconducting cavity or resonator to achieve quantum error correction redundancy without adding more qubits. 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