Postdoctoral Fellow; PREP

Postdoctoral Research Associate (PREP) Scanning SQUID Metrology for Superconducting Electronics

This Postdoctoral Research Associate position is part of the National Institute of Standards and Technology (NIST) Professional Research Experience Program (PREP), which supports collaborative research between NIST scientists and researchers at PREP‑affiliated academic institutions. The position is ideal for early‑career researchers seeking to build an independent research profile while working at the forefront of superconducting electronics and quantum‑enabled metrology.

The postdoctoral associate will conduct original research focused on developing advanced scanning superconducting quantum interference device (SQUID) magnetometry to study superconducting electronic systems. Core research directions include improving SQUID sensor performance, imaging and understanding flux trapping, and evaluating mitigation strategies in high‑speed superconducting circuits.

The successful candidate will have the opportunity to lead and shape research directions
, contribute to the design and construction of next‑generation scanning SQUID instrumentation, and apply these tools to cutting‑edge superconducting devices. Our group has deep expertise in microwave metrology, nanoscale device characterization, and superconducting circuit design, fabrication, and measurement.

• Lead scanning SQUID imaging studies of trapped flux, superconducting circuits, and novel devices
• Develop and optimize SQUID sensors and measurement techniques
• Design and perform high‑speed electronic measurements (>10 GHz)
• Design and fabricate novel superconducting circuits and/or sensors using NIST's advanced cleanroom facilities
• Develop rigorous data analysis pipelines with appropriate statistical validation
• Publish results in high‑impact, peer‑reviewed journals and present findings at major scientific conferences
• Collaborate closely with NIST scientists while maintaining scientific independence and ownership of research outcomes
• Contribute to documentation, software, and data archiving to support long‑term impact of the work

• Development of an independent research program
• A strong publication record
• Visibility within the superconducting electronics and quantum metrology communities
• Preparation for academic, national laboratory, or industry research careers

• PhD in Physics, Electrical Engineering, or a closely related field (completed or near completion)
• Strong written and oral communication skills
• Evidence of scientific productivity through peer‑reviewed publications
• Demonstration of hands‑on experimental research experience with publication(s), e.g., description of experiments constructed, devices fabricated, etc.

• Experience with cryogenic measurements
• Experience with scanning SQUID imaging
• Proficiency in Python or similar scripting languages for data analysis and experiment control
• U.S. citizen preferred

The referenced salary range represents the minimum and maximum salaries for this position and is based on Johns Hopkins University's good faith belief at the time of posting. Not all candidates will be eligible for the upper end of the salary range. The actual compensation offered to the selected candidate may vary and will ultimately depend on multiple factors, which may include the successful candidate's geographic location, skills, work experience, internal equity, market conditions, education/training and other factors, as reasonably determined by the University.

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