公开(公告)号：US20240219485A1

公开(公告)日：2024-07-04

申请号：US18557859

申请日：2022-03-28

Applicant: UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA

Inventor： Mengze SHEN ,  Zhiping YANG ,  Xi KONG ,  Fazhan SHI ,  Jiangfeng DU

IPC: G01R33/032

CPC classification number: G01R33/032

Abstract: Provided is a device based on ensemble nitrogen-vacancy centers, including: a right-angle prism; a dichroic parabolic condensing lens, a bottom opening oblique plane of the dichroic parabolic condensing lens is fixed on an oblique plane of the right-angle prism, and the dichroic parabolic condensing lens is configured to polarize the ensemble nitrogen-vacancy centers by an incident laser and collect a fluorescence signal at the ensemble nitrogen-vacancy center; a diamond, the diamond is a layered diamond, including a first face and a second face opposite to the first face, the first face is fixed at a top of a paraboloid of the dichroic parabolic condensing lens, and the second face includes the ensemble nitrogen-vacancy centers; a Lenz lens attached to the second face and configured to converge microwave magnetic field; a microwave coil located above the Lenz lens and configured to apply microwave magnetic field to the ensemble nitrogen-vacancy centers.

公开(公告)号：US20200003713A1

公开(公告)日：2020-01-02

申请号：US16097772

申请日：2016-05-05

Applicant: UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA

Inventor： Xing RONG ,  Zhifu SHI ,  Xi QIN ,  Yijin XIE ,  Lin WANG ,  Zhen JIANG ,  Jiangfeng DU

IPC: G01N24/10 ,  G01R33/60

Abstract: A magnetic resonance spectrometer and a control apparatus for the magnetic resonance spectrometer based on an FPGA. The control apparatus includes a control unit and a conversion receiving unit. The control unit includes a clock source. A waveform generation unit and a signal receiving unit inside the control apparatus are synchronized by means of the same clock source. The control apparatus includes two working modes: a continuous wave mode and an impulse wave mode. The control apparatus can output a microwave signal which is modulated by any wave and has higher synchronism and time resolution.

公开(公告)号：US20190196999A1

公开(公告)日：2019-06-27

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

CPC classification number: G06F13/387 ,  G04F10/00 ,  G06F1/14 ,  G06F13/38

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.