Location: Lemont, IL
Cap-Exempt H-1B Position — No lottery required
**Postdoctoral Appointee - Superconducting Devices for Multipixel Single-Photon Detection and Multiplexed Readout** Argonne National Laboratory invites applications for a postdoctoral research position in experimental physics and superconducting device development, with a focus on advancing multipixel single-photon camera technology and multiplexed readout for quantum information science applications. As part of a multidisciplinary team spanning multiple Argonne divisions, you will contribute to the design, fabrication, and characterization of superconducting devices based on high kinetic inductance materials, while having the opportunity to shape a new research capability with broad impact across quantum networking, communications, and computing. Research Focus - Design and fabricate superconducting devices exploiting the nonlinear kinetic inductance of thin superconducting films, including microwave resonators for frequency-domain multiplexed readout of single photon detectors (kinetic inductance current sensors) - Develop and characterize superconducting nanowire single-photon detectors (SNSPDs) using high kinetic inductance materials such as NbN, TiN, and NbTiN, targeting high detection efficiency from visible to telecom wavelengths - Implement and test scalable readout architectures for nanowire arrays, including multiplexing concepts based on superconducting cryogenic switches (hTron, fTron) - Perform low-noise cryogenic measurements of device performance, including timing jitter, dark count rate, detection efficiency, and resonator quality factors - Iterate rapidly on fabrication processes and readout circuit designs informed by device characterization and electromagnetic simulations - Contribute to the development of complete instrument systems for characterization of solid-state single-photon emitters, including photon correlation and spectroscopy measurements About the Team You will join a collaborative team of physicists and engineers drawn from Argonne's