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公开(公告)号：US20210004041A1
公开(公告)日：2021-01-07
申请号：US16644937
申请日：2018-02-11
Inventor： Xi Qin , Wenzhe Zhang , Lin Wang , Yu Tong , Xing Rong , Jiangfeng Du
IPC: G06F1/03
Abstract: A sequence signal generator and a sequence signal generation method are provided. In the sequence signal generation method, a waveform output instruction sent by a host computer is received to acquire waveform data. The waveform data includes original square wave sequence data and target square wave sequence data, and the target square wave sequence data includes a preliminary delay parameter and a secondary delay parameter. An original square wave sequence signal is acquired according to the original square wave sequence data. According to the preliminary delay parameter, preliminary delay processing is performed on the original square wave sequence signal to acquire an intermediate square wave sequence signal, and according to the secondary delay parameter, secondary delay processing is performed on the intermediate square wave sequence signal to acquire a target square wave sequence signal.
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公开(公告)号：US20240093345A1
公开(公告)日：2024-03-21
申请号：US18250396
申请日：2020-11-30
Inventor： Mengqi Wang , Ya Wang , Haoyu Sun , Xiangyu Ye , Pei Yu , Hangyu Liu , Pengfei Wang , Fazhan Shi , Jiangfeng Du
CPC classification number: C23C14/042 , C23C14/48 , G01D5/268
Abstract: The present disclosure provides a fixed-position defect doping method for a micro-nanostructure based on a self-alignment process, including: S1, sequentially forming a sacrificial layer and a photoresist layer on a surface of a crystal substrate; S2, performing a lithography on the photoresist layer to form a mask hole according to a micro-nano pattern; S3, performing an isotropic etching on the sacrificial layer through the mask hole, and amplifying the micro-nano pattern to the sacrificial layer; S4, performing an ion implantation doping on an exposed crystal surface below the mask hole; S5, removing the photoresist layer, and depositing a mask material; S6, removing the sacrificial layer, and transferring a micro-nano amplified pattern in the sacrificial layer to a mask material pattern; and S7, etching an exposed crystal surface, and removing the mask material on the surface and forming a specific defect by annealing.
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公开(公告)号：US20240027351A1
公开(公告)日：2024-01-25
申请号：US18256807
申请日：2021-01-12
Inventor： Bo Li , Beibei Tang , Fengjia Fan , Jiangfeng Du
IPC: G01N21/66
CPC classification number: G01N21/66 , G01N2201/06113
Abstract: A transient absorption spectrometer using excitation by a pulse current, including: a central control unit; a pulse generator configured to generate a current pulse signal under an action of a first trigger signal sent by the central control unit, where the current pulse signal is applied to a sample to be tested such that the sample is in a non-luminous excited state for single-carrier injection or a luminous excited state for luminescence in which an electroluminescent signal is generated; a laser configured to emit a pulsed optical signal under an action of a second trigger signal sent by the central control unit; a beam splitter disposed in a light-exiting direction of the laser, and configured to split the pulsed optical signal into a detection optical signal and a reference optical signal, where the detection optical signal irradiates the sample to be tested to generate a detected optical signal; a data acquisition unit configured to acquire, under an action of a third trigger signal and a fourth trigger signal sent by the central control unit, the electroluminescent signal, the detected optical signal and the reference optical signal, and perform a processing to obtain electrical signal data indicating, at a single time instant, absorption intensities of the sample for optical signals of different wavelengths; and a data processing and imaging unit configured to process the electrical signal data to obtain a transient absorption signal of the sample to be tested and perform imaging.
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4.发明公开公开(公告)号：US20230370074A1
公开(公告)日：2023-11-16
申请号：US18029207
申请日：2021-06-07
Inventor： Shaoyi Xu , Tianyu Xie , Zhiyuan Zhao , Fazhan Shi , Jiangfeng Du
Abstract: A method for implementing an atomic clock based on NV-15N coupling spin system in diamond and a device are provided. The method includes: applying a pulse sequence to jointly initialize NV electron spins and 15N nuclear spins; performing a Ramsey interferometry to compare a RF frequency and a 15N hyperfine coupling; entangling the NV electron spin and the nuclear spin, reading out a state of nuclear spins by collecting a fluorescence signal; calculating a frequency difference between the RF frequency and the 15N hyperfine coupling according to the fluorescence signal, thereby locking the RF frequency to the 15N hyperfine coupling; and outputting the RF frequency as a frequency standard. This system is located in a stable solid environment and is not affected by environmental conditions such as an external magnetic field, electric field, and temperature, and therefore it has an excellent robustness. Various components of the device may be integrated into several chips to miniaturize a diamond atomic clock.
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公开(公告)号：US20240304354A1
公开(公告)日：2024-09-12
申请号：US18666581
申请日：2024-05-16
Inventor： Mengxiang Zhang , Chao Yang , Yiheng Lin , Jiangfeng Du
CPC classification number: G21K1/006 , G02B17/023 , G02B27/286
Abstract: A particle trap system is provided, to resolve a problem of complex particle addressing in a conventional technology, and can be used in fields such as quantum computing. The particle trap system may include a trapping module, a first optical splitting module, and a first relative delay module. The trapping module is configured to trap at least two particles. The first optical splitting module is configured to split a received light beam into a first light beam and a second light beam. The first relative delay module is configured to adjust a delay amount for the first light beam and the second light beam to reach a first target particle, where an adjusted first light beam and an adjusted second light beam overlap at the first target particle, and the first target particle is at least one particle in the trapping module.
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Patent Agency Ranking
6.发明公开公开(公告)号：US20230370075A1
公开(公告)日：2023-11-16
申请号：US18029448
申请日：2021-06-07
Inventor： Tianyu Xie , Shaoyi Xu , Zhiyuan Zhao , Fazhan Shi , Jiangfeng Du
Abstract: A method for implementing an atomic clock based on NV-14N coupling spin system in diamond and a device are provided. The method is to lock a RF frequency using a 14N zero-field splitting and output the RF frequency as a frequency standard. The method includes: applying a pulse sequence to jointly initialize NV electron spins and 14N nuclear spins; performing a Ramsey interferometry to compare a RF frequency and a 14N zero-field splitting; entangling the NV electron spin and the nuclear spin, reading out a state of nuclear spins by collecting a fluorescence signal; calculating a frequency difference between the RF frequency and the 14N zero-field splitting according to the fluorescence signal, thereby locking the RF frequency to the 14N zero-field splitting; and outputting the RF frequency as a frequency standard.
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公开(公告)号：US11188115B2
公开(公告)日：2021-11-30
申请号：US16644937
申请日：2018-02-11
Inventor： Xi Qin , Wenzhe Zhang , Lin Wang , Yu Tong , Xing Rong , Jiangfeng Du
IPC: G06F1/03
Abstract: A sequence signal generator and a sequence signal generation method are provided. In the sequence signal generation method, a waveform output instruction sent by a host computer is received to acquire waveform data. The waveform data includes original square wave sequence data and target square wave sequence data, and the target square wave sequence data includes a preliminary delay parameter and a secondary delay parameter. An original square wave sequence signal is acquired according to the original square wave sequence data. According to the preliminary delay parameter, preliminary delay processing is performed on the original square wave sequence signal to acquire an intermediate square wave sequence signal, and according to the secondary delay parameter, secondary delay processing is performed on the intermediate square wave sequence signal to acquire a target square wave sequence signal.
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公开(公告)号：US11002695B2
公开(公告)日：2021-05-11
申请号：US16097772
申请日：2016-05-05
Inventor： Xing Rong , Zhifu Shi , Xi Qin , Yijin Xie , Lin Wang , Zhen Jiang , Jiangfeng Du
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.
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9.发明授权公开(公告)号：US12206422B2
公开(公告)日：2025-01-21
申请号：US18029207
申请日：2021-06-07
Inventor： Shaoyi Xu , Tianyu Xie , Zhiyuan Zhao , Fazhan Shi , Jiangfeng Du
Abstract: A method for implementing an atomic clock based on NV-15N coupling spin system in diamond and a device are provided. The method includes: applying a pulse sequence to jointly initialize NV electron spins and 15N nuclear spins; performing a Ramsey interferometry to compare a RF frequency and a 15N hyperfine coupling; entangling the NV electron spin and the nuclear spin, reading out a state of nuclear spins by collecting a fluorescence signal; calculating a frequency difference between the RF frequency and the 15N hyperfine coupling according to the fluorescence signal, thereby locking the RF frequency to the 15N hyperfine coupling; and outputting the RF frequency as a frequency standard.
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公开(公告)号：US12088312B2
公开(公告)日：2024-09-10
申请号：US18029448
申请日：2021-06-07
Inventor： Tianyu Xie , Shaoyi Xu , Zhiyuan Zhao , Fazhan Shi , Jiangfeng Du
Abstract: A method for implementing an atomic clock based on NV-14N coupling spin system in diamond and a device are provided. The method is to lock a RF frequency using a 14N zero-field splitting and output the RF frequency as a frequency standard. The method includes: applying a pulse sequence to jointly initialize NV electron spins and 14N nuclear spins; performing a Ramsey interferometry to compare a RF frequency and a 14N zero-field splitting; entangling the NV electron spin and the nuclear spin, reading out a state of nuclear spins by collecting a fluorescence signal; calculating a frequency difference between the RF frequency and the 14N zero-field splitting according to the fluorescence signal, thereby locking the RF frequency to the 14N zero-field splitting; and outputting the RF frequency as a frequency standard.
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