Quantum Information Scientist
Quandela
Quantum Information Scientist
Quandela
Photonic quantum computers and single-photon sources
Quandela · Massy, France (Hybrid) · Full-time · Posted 2026-10-29
Workplace: hybrid
Department: Research - Scalable Architecture
Quandela is a global leader in quantum computing, designing, building, and delivering cutting-edge quantum solutions for research and industry. Its offerings include the most energy-efficient quantum computers for data centers, full-stack quantum computing solutions accessible via the cloud, and algorithm access services for academic and industrial customers.
Following a pragmatic, step-by-step roadmap, Quandela has been deploying industrial-grade systems since 2023 while developing future generations of fault-tolerant quantum computers capable of scaling through the integration of thousands of photonic components. Quandela is committed to making quantum computing accessible to all in order to address the most complex industrial and societal challenges. Our ambition is to build large-scale fault-tolerant quantum computers.
Learn more at: https://www.quandela.com/
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About this position: Within Scalable Architecture, we model the physical systems behind our technologies to understand their limitations and guide future designs.
As part of this effort, you will join our Device Physics team, developing theoretical and numerical models of Quandela's quantum-dot-based photon sources in close collaboration with experimental teams.
Your work will cover both quantum modelling and the development of scientific simulation tools, from investigating physical phenomena to improving existing models and making them usable by other researchers.
This role combines theoretical quantum physics, hands-on numerical research and scientific computing, with opportunities to contribute to ongoing projects, support experimental investigations and explore new modelling approaches.
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What you'll do: As a Quantum Information Scientist working on Single Photon Source Theory & Modelling, you will contribute across two complementary areas:
> Theoretical modelling & scientific simulations
> Scientific computing & simulation tools
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How you'll grow:
During your first months: Get familiar with Quandela's quantum-dot systems, existing models and simulation tools while contributing to ongoing projects.
Within 6–12 months: Take ownership of modelling activities, extend existing frameworks and improve their usability across the team.
Longer term: Explore new theoretical approaches and help guide future research directions in quantum-dot modeling.
We are looking for a scientist combining strong theoretical quantum physics and hands-on numerical modelling skills.
You should be comfortable translating physical questions into simulations and developing scientific code that other researchers can use.
Must-have:
Important, but you can grow here:
Bonus:
We welcome candidates from different theoretical and computational physics backgrounds. Direct quantum-dot or photonic quantum-computing experience is not required
Join a research team where theoretical modelling, numerical simulations and scientific computing directly contribute to experimental research and hardware development.
Plus:
Process
The scientific discussions are intended to understand how you approach theoretical modelling, develop and validate numerical simulations, and work with scientific code, including how you assess assumptions and connect results with physical systems.
Beyond that:
If you enjoy combining quantum theory, numerical simulations and scientific computing, this role offers the opportunity to contribute to real hardware challenges while taking ownership of scientific models and tools that support Quandela's research.
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Quandela builds full-stack photonic quantum computers in France, including on-premises MosaiQ hardware and cloud access to its processors. It uses semiconductor quantum-dot single-photon sources to create bright, indistinguishable photons that act as optical qubits, with Perceval, an open-source Python framework, for simulating and programming photonic circuits, and Prometheus, a standalone single-photon source for research labs. The company differentiates itself by offering end-to-end hardware, software, and services—from production in its own facilities to cloud access and an acceleration program that guides clients from use-case exploration to hardware delivery. Its goal is to help clients achieve practical quantum advantages across industries such as cybersecurity, energy, finance, logistics, chemistry, and pharmaceuticals.
Explore more opportunities at Quandela