Senior Quantum Information Scientist Error Correction H/F - 92

Quandela is a European start up that provides photonic quantum computers that are modular, scalable, energy-efficient and accessible both on the cloud and on premise.

Our team of 85 employees, specialises in the development of both software and hardware solutions for a variety of quantum applications. We offer a wide range of services, from developing the most efficient and brightest single photons sources, to creating algorithms for quantum computers and providing cloud quantum computing solutions.

Quandela plays a pivotal role as a strategic partner in the quantum transformation of industrial sectors such as energy, finance, pharmaceuticals, and transportation. Furthermore, we are esteemed collaborators within the academic and research community.

- Following a successful €50 million fundraising in 2023, we are now scaling up our commercial ventures alongside our ongoing research endeavors.
- Quandela has been chosen to participate in the French Tech 2030 program, which aims to bolster French companies pioneering groundbreaking innovations.Description

Join the Fault-Tolerant Quantum Computing (FTQC) team within Quandela's Scalable Architecture division, where theoretical research is developed in interaction with experimental and engineering teams to advance scalable photonic quantum computing.

Quandela operates across several international sites, with research and engineering teams based in Paris, Munich, Montreal, and Barcelona, enabling close interactions between theory, experiments, and system-level engineering.

As a Senior Quantum Error Correction Researcher, you will shape the development of Quandela's fault-tolerant quantum computing architecture.
Your work will directly influence our long-term roadmap and contribute to the robustness and scalability of our photonic quantum hardware.

Why Join Quandela?

Quandela is a deep-tech quantum company with strong academic roots (CNRS/C2N) and a mission to develop large-scale quantum computers. While Paris-Saclay remains a central hub for FTQC activities, the company relies on close coordination across multiple locations to bridge theory, hardware, and software.

Our R&D spans the full quantum computing stack, from quantum device fabrication to system-level control and quantum software. This setup offers a direct opportunity to see theoretical ideas tested, challenged, and implemented on real systems, through frequent scientific exchanges across teams and sites.

In this role, you will contribute to key milestones of our FTQC roadmap, working closely with Quandela's research and engineering teams and an extended network of academic partners (INRIA Paris, LIP6 - Sorbonne Université, INRIA Saclay, Institut de Mathématiques de Bordeaux...).

Depending on your base location, you will regularly collaborate with Paris-based FTQC teams and travel occasionally to Paris to support cross-team alignment and joint research efforts.

What You'll Do:

You will lead the design and performance analysis of fault-tolerant protocols adapted to our spin-photon systems. Your contributions will support both near-term experiments and long-term system scaling.

Initial scope includes:

- Provide guidance on QEC codes: oversee the simulation and analysis of stabilizer, dynamical, and good qLDPC code families under realistic device constraints.
- Improve FTQC strategies: Develop fault-tolerant protocols suited to Quandela's hardware and error model.
- Benchmark decoders: Design custom decoding methods and guide integration based on speed vs accuracy tradeoffs.
- Collaborate across domains: Work closely with hardware and software teams to model errors, improve simulations, and design QEC experiments.

At Quandela, your research will influence prototypes, inform system architecture, and directly support our FTQC roadmap. Because our work is embedded in a strong academic ecosystem, your contributions will also resonate through publications, conference talks, and international collaborations.