R&D Engineer, Superconductive Experimentalist



Palo Alto, CA, USA
Posted on Tuesday, March 19, 2024

PsiQuantum is on a mission to build the world’s first fault tolerant quantum computer capable of tackling today’s most intractable computational challenges to deliver transformative results. We know that means it will need roughly 1 million qubits and will be building scale in size.

Quantum computing is expected to deliver breakthroughs for today’s still impossible computational tasks. By harnessing the laws of quantum physics, quantum computers can provide exponential performance increases over even the most powerful of today’s conventional supercomputers offering the potential for extraordinary advances across a broad range of applications including climate, energy, healthcare, pharmaceuticals, finance, agriculture, transportation, materials design, and many more.

PsiQuantum is uniquely positioned to deliver on the promise of quantum computing. Our architecture is based on photonics which gives us the ability to produce our components using high-volume semiconductor manufacturing processes, the same processes that have been applied in telecommunications and data center applications for decades. Since photons don’t feel heat, we can take advantage of existing cryogenic cooling systems, the kind that have been operating at facilities like Stanford Linear Accelerator (SLAC) since 2018. And because photons are basically light, they can move between subsystems using standard fiber connectivity, without the need for transduction in and out.

Our team is working across the full stack of quantum computing, from quantum architecture to photonic chip manufacturing, advanced opto-electronic packaging, hardware systems design, quantum algorithms and software tools, and cryogenic cooling. We’re a highly motivated and collaborative group focused on a singular goal - building the world’s first Fault Tolerant Quantum Computer on the fastest path possible.

There’s more work to be done and we are looking for exceptional talent to join us on this extraordinary journey!

Job Summary:

The candidates will utilize their professional and educational experience to perform research and development on superconducting single photon detectors and related technologies for use in Quantum Computing.


  • Performing cryogenic electro-optical RF measurements of single-photon detectors & related superconducting devices.
  • Development new characterization methods and set-ups.
  • Data analysis and development new data analysis algorithms.
  • Characterization of quantum-photonic-circuit-integrated superconducting single-photon detectors for use in quantum computing.
  • Collaboration with the device and systems teams to develop device characterization plans and methods.
  • Collaboration with the systems engineers to design and set up cryogenic experimental test equipment.
  • Extensive and continuous survey and analysis of scientific literature on superconducting single-photon detectors.
  • Learning and understanding the physics and experimental behavior of these detectors.
  • Understanding device design constraints and contributing to new device designs & experiments.
  • Contributing to the intellectual property of the company through single-photon-detection.


  • A PhD in Physics, Electrical Engineering or related fields.
  • 4+ years of hands-on experimental research experience with superconducting devices, cryogenic materials & devices or detectors.
  • Experience with cryogenic, low-noise electro-optical experimental design and device characterization.
  • Experience with the design of experiments for device performance validation and model-experiment closure.
  • Experience with computer programming with Python.
  • High-impact publications in independently peer-reviewed scientific journals.
  • Single-photon detector experience is preferred.
  • Experience with low noise electronic circuits is preferred.
  • Solid fundamentals in superconducting device physics is a plus.

PsiQuantum provides equal employment opportunity for all applicants and employees. PsiQuantum does not unlawfully discriminate on the basis of race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), gender identity, gender expression, national origin, ancestry, citizenship, age, physical or mental disability, military or veteran status, marital status, domestic partner status, sexual orientation, genetic information, or any other basis protected by applicable laws.

We are not accepting unsolicited resumes from employment agencies.

The range below reflects the minimum and maximum target range for new hire base salary across all US locations. Actual compensation may vary outside of this range and is dependent on various factors including but not limited to a candidate's qualifications including relevant education and training, competencies, experience, geographic location, and business needs. Base pay is only one part of the total compensation package. Full time roles are eligible for equity and benefits. Base pay is subject to change and may be modified in the future.

For a fully qualified candidate, the expected pay range is:

Pay Range