6 papers
Fast-Recovery Epitaxial NbN Superconducting Nanowire Single-Photon Detectors with Saturated Efficiency at 1550 nm in Liquid Helium
Francesca Incalza, Matteo Castellani, Dip Joti Paul +5
Achieving both high internal efficiency and fast reset times at elevated temperatures remains challenging due to limited understanding of how film properties govern SNSPD performan…
Modeling electrothermal feedback of superconducting nanowire single photon detectors in SPICE
Hanson Nguyen, Alejandro Simon, Reed Foster +1
Superconducting nanowire single-photon detectors (SNSPDs) exhibit complex switching behaviors due to electrothermal feedback during the detection process. Modeling and understandin…
Time-tagging data acquisition system for testing superconducting electronics based on an RFSoC and custom analog frontend
Reed A. Foster, Stephen Kandeh, Owen Medeiros +3
Novel electronic devices can often be operated in a plethora of ways, which makes testing circuits comprised of them difficult. Often, no single tool can simultaneously analyze the…
Scalable Superconducting Nanowire Memory Array with Row-Column Addressing
Owen Medeiros, Matteo Castellani, Valentin Karam +6
Developing ultra-low-energy superconducting computing and fault-tolerant quantum computing will require scalable superconducting memory. While conventional superconducting logic-ba…
Ab initio modeling of nonequilibrium dynamics in superconducting detectors and qubits
Alejandro Simon, Reed Foster, Mihir Sahoo +7
Nonequilibrium quasiparticle (QP) and phonon dynamics are central to the operation of superconducting devices. Superconducting detectors, such as the superconducting nanowire singl…
Characterizing and modeling the influence of geometry on the performance of superconducting nanowire cryotrons
Alejandro Simon, Reed Foster, Owen Medeiros +3
The scaling of superconducting nanowire-based devices to larger arrays is often limited by the cabling required to interface with each device. Cryogenic integrated circuits constru…