A radiofrequency voltage-controlled current source for quantum spin manipulation

Abstract

We present a design for 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 $4{\text{cm}}^2$ and consumes less than 1.3 W of power. It is suitable for use in deployable quantum sensors and nuclear-magnetic-resonance systems.

arXiv comment8 pages, 3 figures, accepted version

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Cited by in corpus (2)

• An efficient high-current circuit for fast radio-frequency spectroscopy in cold atomic gases
• A Radio-Frequency Emitter Design for the Low-Frequency Regime in Atomic Experiments