Abstract
We report on the development of a digital flux-locked loop (DFLL) feedback system for readout of superconducting quantum interference devices. The DFLL is based on a high-speed digital-to-analog converter/analog-to-digital converter and field programmable gate array (FPGA) that can be readily reconfigured for different types of sensors and applications. Our demonstrated DFLL currently supports 4 sensors but is expandable to 40, all of which can be used for real-time calculations. We describe the various system components and present the results of our FPGA algorithm, including a novel approach with flexible working points and a combination of locking, flux jumping, and further digital signal processing. The DFLL has several advantages to conventional systems particularly for multisensor applications.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.