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Postdoctoral Researcher – Superconducting Detector Development and CMB Instrumentation

Argonne National Laboratory · Lemont, IL · $72,879–$121,465 a year · Full time

Posted Apr 17, 2026 · We last checked this listing on Oct 6, 2026

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Likely interview questions for this role

Written from this job description, not a generic list. Each one notes what the interviewer is really checking.

About your past

Tell me about a fabrication problem that affected yield. How did you solve it?

What they are checking: Whether they have real fabrication experience and can improve yield across large arrays.

Tell me about a time you worked on a team building an instrument with a hard deadline.

What they are checking: Whether they can deliver on time as part of a large instrumentation team.

What would you do

Detectors deployed at the South Pole can't easily be fixed. How does that change how you test them?

What they are checking: Whether they understand the high stakes of deployment at remote sites.

Would you be willing to deploy to a remote site, and how would you prepare?

What they are checking: Whether they understand what fieldwork at remote sites like the South Pole involves.

About the work

How does a transition edge sensor bolometer work, and what sets its noise performance?

What they are checking: Whether they understand TES physics well enough to design and improve detectors.

What does microstrip coupling do in these detectors, and what can go wrong with it?

What they are checking: Whether they understand the specific detector architecture the posting names.

How would you tune the transition temperature and saturation power of a TES for the South Pole Telescope?

What they are checking: Whether they understand how detector parameters are matched to observing conditions.

Walk me through how you'd characterize a new batch of detectors before they go into a focal plane.

What they are checking: Whether they know measurements like optical efficiency, time constants and noise.

How would you adapt superconducting detector ideas to dark matter or neutrino measurements?

What they are checking: Whether they can think about the broader applications the posting mentions.

How does readout multiplexing work for large TES arrays?

What they are checking: Whether they understand how thousands of detectors are read out in practice.

Practice this interview out loud.

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The full job description

As published by Argonne National Laboratory.

Argonne National Laboratory invites applications for a Postdoctoral Researcher position in Superconducting Detector Development and CMB Instrumentation. This role focuses on advancing large arrays of Transition Edge Sensor (TES) bolometers for studies of the Cosmic Microwave Background (CMB), while also supporting the exploration of novel applications for superconducting detectors. As a member of Argonne’s High Energy Physics Division, the successful candidate will contribute to the design, fabrication, and characterization of superconducting devices based on microstrip-coupled TES technology, with the goal of delivering focal plane arrays for the South Pole Telescope. The position also offers opportunities to pursue broader research in emerging applications of superconducting detectors and related quantum devices. Research Focus The primary focus of this role is to design, fabricate, characterize, integrate, and deploy superconducting detectors and devices as part of a multidisciplinary team developing advanced instrumentation for CMB measurements at remote sites, including the South Pole. In addition to CMB instrumentation, the position offers opportunities to investigate novel materials and superconducting device concepts for applications in: • Dark matter detection • Neutrino measurements • Millimeter-wave line intensity mapping surveys • Quantum sensing About the Team The postdoctoral researcher will join a highly collaborative team of physicists and engineers across Argonne’s High Energy Physics (HEP) and Materials Science Division (MSD), while also working closely with partners at universities and national laboratories. The Argonne team combines expertise in: • Superconducting detector arrays • Thin-film materials development • Nanofabrication • Cryogenic instrumentation and measurements • Large-array development and deployment This work is supported by Argonne’s world-class research infrastructure, including: • Dilution refrigerators • Adiabatic demagnetization refrigerators • Low-noise DC and RF measurement systems • Cleanroom fabrication facilities • Access to the Center for Nanoscale Materials (CNM) Position Requirements • Recent or soon-to-be-completed PhD (within the last 0-5 years) in physics, electrical engineering, materials science, or a closely related field • Experience in the development and/or deployment of superconducting devices, or related technologies in quantum devices, low-temperature systems, microelectronics, or nanoelectronics • Experience in one or both of the following areas: • Design and fabrication of superconducting or related devices • Low-noise cryogenic measurement techniques at millikelvin to few-kelvin temperatures for device characterization • Ability to model Argonne’s core values of impact, safety, respect, integrity, and teamwork Preferred Qualifications Ideal candidates will have experience in one or more of the following areas: • Transition-edge sensors (TESs) or kinetic inductance detectors (KIDs) • Cleanroom microfabrication processes, including: • Thin-film deposition (e.g., magnetron sputtering) • Electron-beam or optical lithography • Dry and wet etching • Microwave resonator design and characterization • RF and microwave measurement techniques Job Family Postdoctoral Job Profile Postdoctoral Appointee Worker Type Long-Term (Fixed Term) Time Type Full time The expected hiring range for this position is $72,879.00-$121,465.00. Please note that the pay range information is a general guideline only. The pay offered to a selected candidate will be determined based on factors such as, but not limited to, the scope and responsibilities of the position, the qualifications of the selected candidate, business considerations, internal equity, and external market pay for comparable jobs. Additionally, comprehensive benefits are part of the total rewards package. Click here to view Argonne employee benefits! As an equal employment opportunity employer, and in accordance with our core values of impact, safety, respect, integrity and teamwork, Argonne National Laboratory is committed to a safe and welcoming workplace that fosters collaborative scientific discovery and innovation. Argonne encourages everyone to apply for employment. Argonne is committed to nondiscrimination and considers all qualified applicants for employment without regard to any characteristic protected by law. Argonne employees, and certain guest researchers and contractors, are subject to particular restrictions related to participation in Foreign Government Sponsored or Affiliated Activities, as defined and detailed in United States Department of Energy Order 486.1A. You will be asked to disclose any such participation in the application phase for review by Argonne's Legal Department. All Argonne offers of employment are contingent upon a background check that includes an assessment of criminal conviction history conducted on an individualized and case-by-case basis. Please be advised that Argonne positions require upon hire (or may require in the future) for the individual be to obtain a government access authorization that involves additional background check requirements. Failure to obtain or maintain such government access authorization could result in the withdrawal of a job offer or future termination of employment.

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