Xanadu’s mission is to build quantum computers that are useful and available to people everywhere. Few people in their life will be able to be a part of something like this, where if we are successful, the technologies we develop will solve some of the world’s most challenging problems, and literally change the world. We are seeking a Senior Photonic Engineer – Experimentalist to participate in designing, developing and experimentally validating cutting-edge photonic systems.

Your primary focus will be working with integrated photonics, and precise characterization of the performance of complex photonic chips with several types of high-speed integrated electro-optic elements. Design, build and upgrade complex optical laboratory experiments to characterize the performance of photonic integrated chips with electro-optic elements, using continuous-wave and pulsed laser light. Perform precise optical measurements of PICs with networks of fast integrated electro-optic modulators; troubleshoot and benchmark opto-electronic systems for stability, noise reduction, and performance optimization, with attention to properties including switching speed, stability, crosstalk, polarization dependence, etc.

Closely collaborate with PIC development, electrical, mechanical, and software engineering teams to ensure successful module integration. Generate detailed technical documentation, including design specifications, test procedures, characterization reports, and operational manuals. Demonstrated working knowledge of common laboratory RF and opto-electronic equipment (e.g. oscilloscope, signal generator, spectrum analyzer, photodiodes); Demonstrated understanding of optical phase-locking techniques,



strategies to characterize phase noise and polarization noise in optical fibres and on complex photonic chips, and a conceptual understanding of balanced homodyne detection.

Electronics: A solid understanding of basic RF electronics, opto-electronic detector & electro-optic modulator concepts.

Programming skills: Python or similar for data acquisition and analysis. D. degree in Quantum Optics, Photonics, AMO, Electrical Engineering or a closely related field.

Prior work experience: with thin-film lithium niobate modulators; Autonomy and technical adaptability: Experience writing Python scripts for instrument control, hardware interfacing, and automated data acquisition. Expertise in balanced homodyne detection (c.w. or pulsed), laser noise characterization techniques (phase/frequency, RIN), advanced laser interferometry (Pound-Drever-Hall locking, locking/control theory), optical pulse shaping with IQ modulators and AWGs. D. in Quantum Optics, Photonics, AMO, Electrical Engineering or a closely related field.

The base salary range is 130,000 - 180,000 CAD. You will also be eligible for equity and benefits. They are fundamental and lay the foundation for culture at Xanadu. We are committed to building an inclusive, secure, and equitable culture and fostering an environment where our employees feel included, valued, and heard.

We are committed to meeting the needs of all individuals and support a barrier-free workplace. Please be advised that we may use artificial intelligence (AI) tools to assist in the screening and assessment of applicants for this position. If you would like more information about how your data is processed, please contact us. #

📌 Senior Photonic Engineer - Experimentalist (Toronto)
🏢 Xanadu
📍 Toronto