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Published on: August 2, 2019
Control and readout hardware platform for quantum diamond magnetic gradiometer
Zhongli Zhang1, Wenzhe Zhang1,2, Xi Qin1,3,4
1Laboratory of Spin Magnetic Resonance, School of Physical Sciences, Anhui Province Key Laboratory of Scientific Instrument Development and Application, University of Science and Technology of China, Hefei 230026, China.
Abstract:
A control and readout hardware platform, which is developed for the implementation of the quantum magnetic gradiometer based on the nitrogen-vacancy centers in diamond, is reported in this paper. The hardware platform is designed with a mother-daughter board architecture to facilitate multi-channel expansion. The mother board is used to realize the central control and data distribution for the platform, whereas a single daughter board can achieve the signal readout and the feedback control for one nitrogen-vacancy center vector magnetic probe, with an equivalent current noise below 16 pA/Hz1/2. The mother board is designed with a 10 × 20 cm2 printed-circuit-board, and the daughter board has a 5.7 × 23.3 cm2 dimension. The hardware platform has been implemented on the quantum diamond magnetic gradiometer, and the mother-daughter board architecture has an advantage in channel-scalable capacity. This study has a bright future to be applied in the quantum engineering applications that require expandable multi-channel signal readout.
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