公开(公告)号：US11313921B2

公开(公告)日：2022-04-26

申请号：US16960585

申请日：2018-06-20

Applicant: University of Science and Technology of China

Inventor： Yingqiu Dai ,  Yunbin Zhu ,  Xing Rong ,  Jiangfeng Du

IPC: G01R33/032

Abstract: A magnetic field measurement device and a magnetic field measurement method based on solid-state spins are provided. Zeeman splitting between electron energy levels of electrons of a magnetic sensitive unit is different under the action of external magnetic fields having different intensities. Continuous excitation and manipulation is applied to the electrons by means of a control field and control laser, so that spins of a system can reach a balanced state. The spin population of the system is influenced by the external magnetic fields. Therefore, fluorescence signals with intensities changing with the spin population of the system can be obtained, and fluorescent signals having different intensities can be obtained according to the different intensities of the external magnetic fields.

公开(公告)号：US10733126B2

公开(公告)日：2020-08-04

申请号：US16070774

申请日：2016-01-18

Applicant: University of Science and Technology of China

Inventor： Xi Qin ,  Yijin Xie ,  Xing Rong ,  Yu He ,  Lin Wang ,  Zhifu Shi ,  Jiangfeng Du

IPC: G06F13/38 ,  G06F1/14 ,  G04F10/00

Abstract: An FPGA-based square-wave generator and a square-wave generation method. The generator comprises a bus control module for receiving a broadcast command and a broadcast address sent by an upper computer; a waveform broadcast management module for receiving the broadcast command and the broadcast address, reading original waveform data from a storage module according to the broadcast command and the broadcast address, decoding the original waveform data to obtain waveform data, generating delay data according to the waveform data, and outputting the waveform data and the delay data; a parallel-serial conversion unit for receiving waveform data input in parallel and serially outputting the waveform data to obtain a square-wave signal; a delay chain unit for delaying the square-wave signal; and a multi-path selection controller for receiving the delay data, determining an output node, for the square-wave signal, on the delay chain unit according to the delay data, and leading out a corresponding delayed square-wave signal from the output node and outputting the signal. By means of the present invention, square-wave signals with high accuracy and no dead time can be continuously output.