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5 November 2020 An integrated device for nitrogen-vacancy centers synchronization detection system
Lu Chen, Yuchen Liu, Jixing Zhang, Xiangyun Li, Heng Yuan
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Proceedings Volume 11564, AOPC 2020: Optoelectronics and Nanophotonics; and Quantum Information Technology; 115640S (2020) https://doi.org/10.1117/12.2580317
Event: Applied Optics and Photonics China (AOPC 2020), 2020, Beijing, China
Abstract
In this work, we report an integrated configurable device, which successfully solved the synchronization problem of signals and provided the possibility for the “closed-loop” control of measurement. The digital part of the device is completely realized in the field programmable gate array (FPGA). According to the requirements of measuring arbitrary waveform generator(AWG) and high accuracy in the design of high-performance lock-in amplifier(LIA). the integrated and configurable design has more portable advantages in future practical applications. The device is suitable for measuring devices with quantum sensing and can be used in other measuring systems with weak signal. We design the arbitrary waveform generator and the lock-in amplifier in a digital circuit, and control the entire measurement system under the same clock, which can solve the problem of signal synchronization. The bandwidth of the output dual-channel arbitrary waveform generator can reach 30 MHz, The 4 V voltage signal is output through the operational amplifier and the signal is output as an analog quantity through a 30MHz low-pass filter. The designed arbitrary waveform generator can provide a reference signal for the lock-in amplifier. The lock-in amplifier adopts a double-channel orthogonal design, and finally uses the coordinate rotation method to calculate the final result.
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Lu Chen, Yuchen Liu, Jixing Zhang, Xiangyun Li, and Heng Yuan "An integrated device for nitrogen-vacancy centers synchronization detection system", Proc. SPIE 11564, AOPC 2020: Optoelectronics and Nanophotonics; and Quantum Information Technology, 115640S (5 November 2020); https://doi.org/10.1117/12.2580317
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KEYWORDS
Amplifiers
Analog electronics
Clocks
Field programmable gate arrays
Signal detection
Signal processing
Signal generators
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