Single-Photon Source Research Scientist

Single-Photon Source Research Scientist

Quandela

Palaiseau, France

About this position

We are opening a Research Scientist position to strengthen this effort — developing and validating new excitation schemes for semiconductor-based single-photon sources, bridging fundamental optics and applied photonics.

Requirements

What will you do?

Design and operate optical experiments:

• Build, align, and stabilize custom optical setups to study semiconductor quantum emitters (quantum dots, color centers, 2D materials) at cryogenic temperatures;
• Implement and characterize excitation sequences using picosecond lasers and programmable pulse-shaping modules;
• Quantify brightness, coherence, and excited-state dynamics; identify and address limiting factors in performance.

Develop and validate excitation schemes:

• Optimize optical excitation protocols to enhance brightness and indistinguishability;
• Validate and document experimental methods for integration into Quandela’s single-photon source roadmap;
• Propose novel techniques compatible with cluster-state and spin-photon architectures.

Collaborate and share results:

• Work closely with colleagues from Semiconductor Optics, Cluster States, and Quantum Interconnects teams;
• Contribute to publications, internal documentation, and international conferences;
• Support the cross-functional transfer of research outcomes to production teams.

What We’re Looking For?

Must-have:

• PhD (Optics, Photonics, or Semiconductor Physics) + hands-on experience in optical research labs — academic or industrial;
• Strong experimental skills: optical alignment, cryogenic setups, and system stabilization;
• Proficiency in laser spectroscopy, pulse shaping, and time-resolved measurements on quantum emitters;
• Python proficiency for experiment control, automation, and data analysis;
• Excellent communication and documentation skills in English (C1 level or above).

Important (can grow here):

• Experience with chirped-pulse or two-photon resonant spectroscopy techniques;
• Knowledge of cavity QED or photonic cavity design (for emitter–cavity optimization).

Bonus:

• Publication record in quantum optics or semiconductor physics journals;
• Experience in collaborative or multi-institutional R&D;
• Basic French skills (for lab and administrative coordination).

Languages:

• English C1 level required: international and multicultural team.