Postdoctoral Research Associate - Physics

Position Summary

The Astrophysics, Particle Astrophysics, and Space Sciences group of the Department of Physics at WashU in St. Louis invites applications for a postdoctoral position, with a negotiable start around September 6, 2026. The appointment is expected to last up to 2 years with potential year‑to‑year extension depending on performance and funding.

The postdoc will work in the group of Prof. Karthik Ramanathan, primarily on the development of novel superconducting detectors for particle physics applications. These include qubit‑based detectors (QPDs/SQUATs) and Kinetic Inductance Detectors (KIDs). The project scope runs from design to on‑site nano‑fabrication to device testing in the group’s dilution refrigerator, along with analyzing collected data. The postdoc may define additional sub‑projects, such as developing new sub‑eV energy calibration techniques, and interface with a larger experimental collaboration.

• Design, fabricate, and test superconducting detector devices (QPDs/SQUATs, KIDs) in collaboration with the group.
• Operate and troubleshoot the campus dilution refrigerator for device testing.
• Perform data analysis and interpret experimental results.
• Define and pursue additional sub‑projects, such as sub‑eV energy calibration techniques.
• Collaborate with larger experimental collaborations and communicate progress to the group.

• Ph.D. (or equivalent terminal degree) in physics or related field.

• Ph.D. in physics (or related field) before start date.
• Experience with superconducting device design, cryogenics, and nanofabrication.
• Background in quantum information science, particularly with superconducting transmons.

Washington University in St. Louis offers a comprehensive benefits package. For a summary of benefits, visit (Use the "Apply for this Job" box below)..

Washington University in St. Louis is committed to the principles and practices of equal employment opportunity. It is the University’s policy to provide equal opportunity and access to persons in all job titles without regard to race, ethnicity, color, national origin, citizenship (where prohibited by federal law), age, religion, sex, sexual orientation, gender identity or expression, disability, protected veteran status, or genetic information.