A radiofrequency voltage-controlled current source for quantum spin manipulation

A radiofrequency voltage-controlled current source for quantum spin manipulation

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 m...

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Veröffentlicht in:Review of scientific instruments 2020-10, Vol.91 (10), p.104708
Hauptverfasser: Barker, D. S., Restelli, A., Fedchak, J. A., Scherschligt, J., Eckel, S.
Format: Artikel
Sprache:eng
Schlagworte:
Circuits
Current sources
Electric potential
Field coils
NMR
Nuclear magnetic resonance
Power consumption
Quantum sensors
Radio frequency
Scientific apparatus & instruments
Voltage
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Beschreibung
Zusammenfassung: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 cm2 and consumes less than 1.3 W of power. It is suitable for use in deployable quantum sensors and nuclear magnetic resonance systems.
ISSN:0034-6748
1089-7623
1089-7623
DOI:10.1063/5.0011813