公开(公告)号：US20210054526A1

公开(公告)日：2021-02-25

申请号：US16065526

申请日：2016-12-06

申请人： ELEMENT SIX TECHNOLOGIES LIMITED ,  ELEMENT SIX TECHNOLOGIES US CORPORATION

发明人： Wilbur LEW ,  Gregory BRUCE ,  Andrew Mark EDMONDS ,  Matthew Lee MARKHAM ,  Alastair Douglas STACEY ,  Harpreet Kaur DHILLON

IPC分类号： C30B29/04 ,  C30B25/02 ,  C30B33/04

摘要： A single crystal diamond material comprising: neutral nitrogen-vacancy defects (NV0); negatively charged nitrogen-vacancy defects (NV−); and single substitutional nitrogen defects (Ns) which transfer their charge to the neutral nitrogen-vacancy defects (NV0) to convert them into the negatively charged nitrogen-vacancy defects (NV), characterized in that the single crystal diamond material has a magnetometry figure of merit (FOM) of at least 2, wherein the magnetometry figure of merit is defined by (I) where R is a ratio of concentrations of negatively charged nitrogen-vacancy defects to neutral nitrogen-vacancy defects ([NV−]/[NV0]), [NV−] is the concentration of negatively charged nitrogen-vacancy defects measured in parts-per-million (ppm) atoms of the single crystal diamond material, [NV0] is a concentration of neutral nitrogen-vacancy defects measured in parts-per-million (ppm) atoms of the single crystal diamond material, and T2′ is a decoherence time of the NV− defects, where T2′ is T2* for DC magnetometry or T2 for AC magnetometry.

公开(公告)号：US20240345186A1

公开(公告)日：2024-10-17

申请号：US18579692

申请日：2022-07-18

申请人： Element Six Technologies Limited

发明人： Andrew Mark EDMONDS ,  Matthew Lee MARKHAM ,  Pierre-Olivier François Marc COLARD

IPC分类号： G01R33/032 ,  G01R33/00 ,  G01R33/26

CPC分类号： G01R33/032 ,  G01R33/0082 ,  G01R33/26

摘要： A device that utilises an electronic Zeeman splitting effect comprises a solid-state material that comprises at least one spin defect. The device also comprises a magnetic field generator configured to generate a bias magnetic field, and a compensation system to compensate for an effect of changes in temperature on the bias magnetic field. The compensation comprises a temperature sensor configured to measure any of a temperature and a change in temperature of the magnetic-field generator, and a computer device configured to determine a change in the bias magnetic field as a result of a change in the measured temperature or the measured change in temperature. The computer device is further configured to adjust a predetermined bias magnetic field value using the determined change in bias magnetic field and using the value as an input to the compensation system to compensate for the effect of changes in temperature on the bias magnetic field.

公开(公告)号：US20240309554A1

公开(公告)日：2024-09-19

申请号：US18576900

申请日：2022-07-05

申请人： Element Six Technologies Limited

发明人： Matthew Lee MARKHAM ,  Jonathan Christopher NEWLAND

IPC分类号： C30B29/04 ,  C30B31/22 ,  C30B33/02 ,  C30B33/04 ,  C30B33/10

CPC分类号： C30B29/04 ,  C30B31/22 ,  C30B33/02 ,  C30B33/04 ,  C30B33/10

摘要： A single crystal CVD diamond component and a method of fabricating the single crystal CVD diamond component. The single crystal CVD diamond component comprises a surface, wherein at least a portion of the surface has been processed by chemical mechanical polishing, CMP, and a layer of quantum spin defects, said layer of quantum spin defects being disposed within 500 nm of the surface.