Argonne National Laboratory invites applications for a postdoctoral research position in experimental physics and superconducting device development, focused on advancing multipixel single-photon camera technology and multiplexed readout systems for quantum information science applications.
In this role, you will join a multidisciplinary team spanning several Argonne divisions and contribute to the design, fabrication, and characterization of superconducting devices based on high kinetic inductance materials. This position offers a unique opportunity to help build a new research capability with potential impact across quantum networking, communications, and computing.
Research Focus
Design and fabricate superconducting devices that leverage the nonlinear kinetic inductance of thin superconducting films, including microwave resonators for frequency-domain multiplexed readout of single-photon detectors using kinetic inductance current sensors
Develop and characterize superconducting nanowire single-photon detectors (SNSPDs) using high kinetic inductance materials such as NbN, TiN, and NbTiN, with the goal of achieving high detection efficiency from visible to telecom wavelengths
Implement and evaluate scalable readout architectures for nanowire arrays, including multiplexing approaches based on superconducting cryogenic switches such as hTron and fTron
Perform low-noise cryogenic measurements to assess device performance, including timing jitter, dark count rate, detection efficiency, and resonator quality factors
Rapidly refine fabrication processes and readout circuit designs based on device characterization results and electromagnetic simulations
Contribute to the development of integrated instrument systems for the characterization of solid-state single-photon emitters, including photon correlation and spectroscopy measurements
About the Team
You will become part of a highly collaborative team of physicists and engineers from Argonne’s High Energy Physics (HEP), X-ray Science (XSD), and Materials Science (MSD) divisions. Together, the team brings expertise in:
Superconducting detector arrays
Thin-film materials development
Nanofabrication
Cryogenic instrumentation
Quantum communications
Solid-state quantum emitter systems
This project benefits from Argonne’s world-class research infrastructure, including:
Dilution refrigerators
Adiabatic demagnetization refrigerators
Low-noise DC and RF measurement systems
Advanced cleanroom fabrication facilities, including the Center for Nanoscale Materials (CNM)
Why Join Argonne
This is an opportunity to contribute to cutting-edge research at the intersection of superconducting devices, quantum photonics, and advanced instrumentation. You will work in a collaborative national laboratory environment with access to exceptional facilities, expert colleagues, and the chance to help shape technologies with broad relevance to future quantum systems.
Position Requirements
Recent or soon-to-be-completed PhD (within the last 0-5 years) in field of physics, electrical engineering, materials science, or a related field
Demonstrated experience with superconducting devices or related quantum or low-temperature technologies, particularly in device design, fabrication, and/or measurement
Proficiency in low-noise cryogenic measurement techniques spanning millikelvin to few-kelvin temperatures
Ability to model Argonne’s core values of impact, safety, respect, integrity, and teamwork
Preferred Qualifications
Experience with superconducting nanowire single-photon detectors (SNSPDs), transition-edge sensors (TESs), or kinetic inductance detectors (KIDs)
Experience with cleanroom microfabrication processes, including thin-film deposition (e.g., magnetron sputtering), electron-beam or optical lithography, and dry/wet etching
Familiarity with microwave resonator design, characterization, and RF/microwave measurement techniques
Experience with electromagnetic simulation tools such as Sonnet, Ansys HFSS,…