Technical Lead, Single-Photon Source Validation (Cryogenic Electro-Optics) at PsiQuantum, Milpitas
Job Description
PsiQuantum is hiring a technical lead for single-photon source validation in Milpitas. The lead plans and runs validation of cryogenic electro-optical assemblies built from single-photon source circuits and superconducting single-photon detectors: defining figures of merit, writing the analysis that extracts performance parameters, debugging assemblies at cryogenic temperatures and mentoring junior engineers. It is a senior role asking for 12+ years of industry experience.
At a glance
- Role: Technical Lead, Single Photon Sources Validation
- Location: Milpitas, California, USA
- Posted: 21 April 2026
- Experience: Bachelor’s or above plus 12+ years in industry
- Apply: open until filled (re-checked 13 October 2026)
About the single-photon validation role
- Define validation plans and figures of merit for cryogenic electro-optical assemblies
- Lead development of analysis algorithms to extract key performance parameters
- Lead debugging and characterisation of assemblies in cryogenic setups
- Help bring up lab setups with light sources, detectors, switches and electronics
- Automate measurements into a database
- Mentor junior engineers and feed back to designers
What PsiQuantum is looking for
- A bachelor’s degree or above in engineering, physics or materials science, plus 12+ years in industry
- A record of leading cross-functional projects into products
- Single-photon detectors and cryogenic testing
- Nonlinear optical photonic integrated circuits
- Optical and electrical test equipment: power meters, lasers, OSA, oscilloscopes, AWGs and VNAs
Nice to have
- Photonic quantum experiments
Pay and location
PsiQuantum lists a US base pay range of $195,000 to $215,000 and a Bay Area range of $200,000 to $225,000, plus equity and benefits.
How to apply
Apply through the official PsiQuantum job posting. PsiQuantum’s posting does not give a closing date, so the role is open until filled; ResearchJobs.in will re-check this listing on 13 October 2026. Check the posting for location and work-authorisation details before you apply.
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Hiring institution: PsiQuantum
Official advertisement: www.psiquantum.com
How to prepare for this application
- Photon sources: explain how you measured heralding efficiency, purity or indistinguishability in past work.
- Cryogenics: describe setups you brought up and the failure modes you debugged.
- Leadership: prepare examples of taking a new concept into a product.
- Detectors: revise SNSPD efficiency, dark counts and timing jitter.
About PsiQuantum
PsiQuantum, founded in 2016, is building a large, fault-tolerant quantum computer on silicon photonics, with chips made in commercial semiconductor fabs such as GlobalFoundries. It has announced government-backed builds of utility-scale machines in Brisbane, Australia, and Chicago, USA.
