Cryogenic Characterization of a Superconductor Quantum-Based Microwave Reference Source for Communications and Quantum Information
| Autor: | Dylan F. Williams, Samuel P. Benz, Nathan E. Flowers-Jacobs, Peter F. Hopkins, Paul D. Dresselhaus, Alirio Boaventura, Manuel Castellanos-Beltran, Anna E. Fox, Justus A. Brevik |
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| Rok vydání: | 2021 |
| Předmět: |
Physics
Physics::Instrumentation and Detectors business.industry Astrophysics::Instrumentation and Methods for Astrophysics Cryogenics Condensed Matter Physics RF probe Electronic Optical and Magnetic Materials Metrology Device under test Optoelectronics Radio frequency Electrical and Electronic Engineering Quantum information business Microwave Quantum computer |
| Zdroj: | IEEE Transactions on Applied Superconductivity. 31:1-9 |
| ISSN: | 2378-7074 1051-8223 |
| Popis: | We are developing a new instrument, the RF Josephson arbitrary waveform synthesizer (RF-JAWS), for communications metrology and quantum information applications. An important aspect of the RF-JAWS design is the accurate and traceable characterization of its superconducting devices. In this article, we present a procedure for characterizing microwave superconducting devices in a cryogenic RF probe station via a vector network analyzer (VNA) calibrated with a custom cryogenic calibration kit colocated with the superconducting device under test (DUT) in the cryogenic environment. By de-embedding lossy and dispersive RF interconnects linking the superconducting DUT to the measurement apparatus at room temperature, we characterize the DUT exactly at the cryogenic on-wafer reference plane. More importantly, we operate our VNA with an external modulated source and our procedure features metrology-grade multiline thru-reflect-line calibration and absolute power and phase corrections, as opposed to the more common relative scattering-parameter correction. In addition, we apply an X -parameter model to account for impedance mismatch in cryogenic Josephson microwave sources. Our techniques are also suitable for cryogenic characterization of microwave superconducting devices for solid-state quantum computers and could help to optimize the quantum-classical interfaces in these systems. |
| Databáze: | OpenAIRE |
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