Quantum Optics Scientist
Quandela
Quantum Optics Scientist
Quandela
Photonic quantum computers and single-photon sources
Quandela · Massy, France · Full-time · Posted 2026-10-01
Workplace: on_site
Department: Products - Optics, Electronics & QPU Assembling
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.
Learn more at: Quandela | Leading Photonic Quantum Computing Solutions
About this position:
You will join the QPU Prototyping team, responsible for developing and integrating the optical systems at the heart of Quandela's quantum processors.
Working alongside experimental scientists and engineers across optics, electronics and semiconductor technologies, you will develop quantum optical modules for current and next-generation QPUs.
We are looking for a Quantum Optics Scientist with strong experimental expertise, capable of designing, operating and optimising complex photon-based systems.
This is a hands-on R&D position, combining experimental quantum optics, practical problem-solving and system integration.
Why This Role Matters?
Your experiments won't stop at the laboratory bench. They will become part of operational quantum processors.
By improving optical performance, stability and reproducibility, you will help turn advanced quantum optics experiments into reliable QPU modules.
Your work will also contribute to Quandela's next-generation systems, including developments towards logical qubits and fault-tolerant quantum computing.
What you'll do:
Develop and operate quantum optical systems
Optimise and integrate QPU modules
Develop experimental tools and collaborate
How you'll grow:
First 3 months: Become familiar with Quandela's quantum optical systems, experimental infrastructure and QPU requirements. Take ownership of your first setup.
Within 6 months: Develop and qualify a quantum optical module, contributing to its integration into an operational QPU.
Within 12 months: Take ownership of multiple modules or a QPU subsystem, with increasing responsibility for performance and stability.
Longer term: Mentor junior engineers, contribute to new QPU architectures and potentially progress towards technical leadership.
We are looking for an experimental quantum optics scientist with strong hands-on expertise and the ability to turn complex optical experiments into reliable hardware.
We welcome PhD graduates, postdoctoral researchers and experimental scientists with experience in photon-based quantum systems. Experience across different research environments is particularly valued.
Must-have:
Important, but you can grow here:
Technical & system integration
Operational ownership
Bonus:
Direct spin expertise is not required. What matters is your quantum optics background, experimental autonomy and ability to learn new technologies.
Join a multidisciplinary team developing quantum optical systems for next-generation processors, with direct experimental ownership and opportunities for technical progression.
Process
Beyond that: At Quandela, we value diverse scientific backgrounds, curiosity and practical experimental skills.
Whether you are completing your PhD, working as a postdoctoral researcher or exploring opportunities beyond academia, we'd love to hear from you if you enjoy building complex quantum optical experiments and turning research into working technology.
Powered by Workable
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