Xanadu’s mission is to build quantum computers that are useful and available to people everywhere. 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 – Integrated Homodyne to participate in designing, developing and experimentally validating cutting-edge photonic systems. You will be working with photonic chips that include networks of high-speed electro-optic modulators and integrated balanced homodyne detectors, with a particular focus on high-efficiency pulsed homodyne detection and pulsed quantum homodyne tomography. 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.

Characterize and benchmark the performance of integrated balanced homodyne detectors for pulsed signals, with bandwidths in the hundreds of MHz regime. Design and build new characterization strategies as needed, to fit evolving optical/electrical requirements. Benchmark and drive further development of signal processing techniques for pulsed homodyne detection & homodyne tomography of quantum states of light. design and troubleshoot chip control electronics, PID controllers and high-precision locking schemes for ultra-secure electronic and optical systems; 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.

Electronics: Working familiarity with opto-electronic detectors, transimpedance amplifiers; sound understanding of common RF electronics & electro-optic modulator concepts. D. in Quantum Optics, Photonics, AMO, Electrical Engineering or a closely related field.

Prior work experience: thin-film lithium niobate modulators; Demonstrated expertise in pulsed homodyne detection and homodyne tomography of quantum optical states, alongside familiarity with recent research in these areas.

Autonomy and technical adaptability: Experience writing Python scripts for instrument control, hardware interfacing, and automated data acquisition.

Modeling & Analysis Skills: Proven ability to build mathematical models of physical systems utilizing both analytical and numerical tools; expertise in advanced signal processing techniques.

Experience defining the physical, optical, and electrical interfaces between PICs and high-speed ASICs within a Co-Packaged Optics (CPO) framework. 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, safe, 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 Photonics Engineer - Homodyne detection (Toronto)
🏢 Xanadu
📍 Toronto