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A radiofrequency voltage-controlled current source for quantum spin manipulation

TitleA radiofrequency voltage-controlled current source for quantum spin manipulation
Publication TypeJournal Article
Year of Publication2020
AuthorsD.. S. Barker, A.. Restelli, J.. A. Fedchak, J.. Scherschligt, and S.. Eckel
JournalRev. Sci. Instrum.
Volume91
Date Publishedoct
ISSN0034-6748
Abstract

We present a wide-bandwidth, voltage-controlled current source that is easily integrated with radiofrequency magnetic field coils. Our design uses current feedback to compensate for the frequency-dependent impedance of a radiofrequency antenna. We are able to deliver peak currents greater than 100 mA over a 300 kHz to 54 MHz frequency span. The radiofrequency current source fits onto a printed circuit board smaller than 4 cm(2) and consumes less than 1.3 W of power. It is suitable for use in deployable quantum sensors and nuclear magnetic resonance systems.

DOI10.1063/5.0011813