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About the Role
Contribute expertise in precision measurements for optical detector metrology to advance the performance and scalability of our Superconducting Nanowire Single Photon Detector (SNSPD) platform. Take ownership of the development, implementation, and deployment of an ultra-high-accuracy system detection efficiency (SDE) metrology capability for SNSPD-based detectors. Design and validate a near-infrared optical metrology system setting new standards in stability, repeatability, and accuracy, including component selection, control, monitoring, data analysis, and integration within cryogenic detector infrastructure. Measure record-breaking uncertainties of fiber-coupled single-photon detectors in the near infra-red using a cryogenic radiometer to develop a world-leading standard. Ensure SDE measurements are accurate, scalable, and production-ready.
Responsibilities
- Lead the implementation of an ultra-high-accuracy metrology system for measuring SNSPD system detection efficiency at near-infrared wavelengths
- Integrate and operate a cryogenic radiometer as an optical power reference standard
- Perform detailed cryostat-based SNSPD characterization to validate performance, repeatability, and long-term stability of SDE measurements
- Identify and resolve subtle system-level effects that influence detection efficiency, such as thermal drifts, and background noise suppression
- Define measurement protocols and statistical analysis pipelines to support rigorous validation of large-scale detector array performance
- Interface with internal teams and external collaborators
- Contribute to pushing the state-of-the-art in precision measurement for single-photon detectors
Requirements
- PhD in Physics, Electrical/Mechanical Engineering, or a related field, with at least 2 years of postdoctoral or industry experience
- Proven track record in high-precision measurement, metrology, or detector calibration
- Extreme attention to detail and a systematic approach to experimentation, with a focus on minimizing both systematic and statistical errors
- Familiarity with fiber-coupled optical systems
- Excellent interpersonal and written communication skills
- Comfortable working both independently and collaboratively on multidisciplinary hardware projects in a dynamic environment
Skills
- Python-based lab automation
- Data acquisition
- SNSPD
- TES
- MKID
- Cryogenic detector technologies
- Analog test equipment (SMU, VNA, photodetectors)
- CAD
- Optical simulation (Zemax)
- Thermal simulation (COMSOL)
- Mechanical design simulation (SolidWorks)
- Cryogenic systems (4K or colder)
- Optical Spectrum Analyzers (OSA)
- Polarization controllers
- DFB lasers
- Fiber-based mode-locked lasers
- Optical modulators
- Attenuators
Experience Level
- Senior
Education Level
- PhD
Salary/Compensations
- 150,000 - 200,000 CAD
Benefits
- Equity
- Benefits
About the Company
- Xanadu's mission is to build quantum computers that are useful and available to people everywhere.
- At Xanadu, we are learners, innovators, researchers, collaborators and problem solvers.
- We are creating something that has never been built before.
- What we are doing is extremely hard, the classic moon shot.
- 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.
- And that is something to be excited about!
Equal Opportunity
- We are an equal opportunity employer and encourage candidates of all backgrounds to apply.
- 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.
- Should you require accommodations at any point during the recruitment process please contact Recruiting at recruiting@xanadu.ai.
- Please be advised that we may use artificial intelligence (AI) tools to assist in the screening and assessment of applicants for this position.
- These tools assist our recruitment team but do not replace human judgment.
- Final hiring decisions are ultimately made by humans.
- If you would like more information about how your data is processed, please contact us.