公开(公告)号：US12234570B2

公开(公告)日：2025-02-25

申请号：US17593201

申请日：2020-03-30

Applicant: ELEMENT SIX TECHNOLOGIES LIMITED

Inventor： Andrew Mark Edmonds ,  Pierre-Olivier Francois Marc Colard ,  Matthew Lee Markham

IPC: C30B25/20 ,  C23C16/00 ,  C23C16/02 ,  C23C16/27 ,  C23C16/56 ,  C30B25/16 ,  C30B25/18 ,  C30B29/04 ,  C30B29/68 ,  C30B33/00

Abstract: A method of forming a diamond composite body and the diamond composite body. A first single crystal diamond body is provided, which contains nitrogen and has a uniform strain such that over an area of at least 1×1 mm, at least 90 percent of points display a modulus of strain-induced shift of NV resonance of less than 200 kHz, wherein each point in the area is a resolved region of 50 μm2. The first single crystal diamond body is treated to convert at least some of the nitrogen to form at least 0.3 ppm nitrogen-vacancy, NV−, centres. A CVD process is used to grow a second single crystal diamond body on a surface of the first single crystal diamond body. The second single crystal diamond body has an NV concentration less than or equal to 10 times lower than the NV− concentration in the first single crystal diamond body.

公开(公告)号：US12037702B2

公开(公告)日：2024-07-16

申请号：US18488602

申请日：2023-10-17

Applicant: ELEMENT SIX TECHNOLOGIES LIMITED

Inventor： Andrew Mark Edmonds ,  Matthew Lee Markham ,  Pierre-Olivier Francois Marc Colard

IPC: C30B25/20 ,  C23C16/00 ,  C23C16/02 ,  C23C16/27 ,  C23C16/56 ,  C30B25/16 ,  C30B25/18 ,  C30B29/04 ,  C30B29/68 ,  C30B33/00

CPC classification number: C30B25/20 ,  C23C16/006 ,  C23C16/02 ,  C23C16/27 ,  C23C16/56 ,  C30B25/16 ,  C30B25/186 ,  C30B25/205 ,  C30B29/04 ,  C30B29/68 ,  C30B33/00

Abstract: Single crystal CVD diamond material comprising a total nitrogen concentration of at least 5 ppm and a neutral single substitutional nitrogen, Ns0, to total single substitutional nitrogen, Ns, ratio of at least 0.7. Such a diamond is observed to have a relatively low amount of brown colouration despite the relatively high concentration of nitrogen. A method of making the single crystal diamond is also disclosed, the method including growing the CVD diamond in process gases comprising 60 to 200 ppm nitrogen, in addition to a carbon-containing gas, and hydrogen, wherein the ratio of carbon atoms in the carbon-containing gas to hydrogen atoms in the hydrogen gas is 0.5 to 1.5%.

公开(公告)号：US20240060210A1

公开(公告)日：2024-02-22

申请号：US18488602

申请日：2023-10-17

Applicant: ELEMENT SIX TECHNOLOGIES LIMITED

Inventor： Andrew Mark Edmonds ,  Matthew Lee Markham ,  Pierre-Olivier Francois Marc Colard

IPC: C30B25/20 ,  C23C16/00 ,  C23C16/02 ,  C23C16/27 ,  C23C16/56 ,  C30B25/16 ,  C30B25/18 ,  C30B29/04 ,  C30B29/68 ,  C30B33/00

CPC classification number: C30B25/20 ,  C23C16/006 ,  C23C16/02 ,  C23C16/27 ,  C23C16/56 ,  C30B25/16 ,  C30B25/186 ,  C30B25/205 ,  C30B29/04 ,  C30B29/68 ,  C30B33/00

Abstract: Single crystal CVD diamond material comprising a total nitrogen concentration of at least 5 ppm and a neutral single substitutional nitrogen, Ns0, to total single substitutional nitrogen, Ns, ratio of at least 0.7. Such a diamond is observed to have a relatively low amount of brown colouration despite the relatively high concentration of nitrogen. A method of making the single crystal diamond is also disclosed, the method including growing the CVD diamond in process gases comprising 60 to 200 ppm nitrogen, in addition to a carbon-containing gas, and hydrogen, wherein the ratio of carbon atoms in the carbon-containing gas to hydrogen atoms in the hydrogen gas is 0.5 to 1.5%.

公开(公告)号：US11821107B2

公开(公告)日：2023-11-21

申请号：US17593200

申请日：2020-03-30

Applicant: ELEMENT SIX TECHNOLOGIES LIMITED

Inventor： Andrew Mark Edmonds ,  Matthew Lee Markham ,  Pierre-Olivier Francois Marc Colard

IPC: C30B25/20 ,  C30B25/16 ,  C30B29/04 ,  C23C16/00 ,  C23C16/02 ,  C23C16/27 ,  C23C16/56 ,  C30B25/18 ,  C30B29/68 ,  C30B33/00

CPC classification number: C30B25/20 ,  C23C16/006 ,  C23C16/02 ,  C23C16/27 ,  C23C16/56 ,  C30B25/16 ,  C30B25/186 ,  C30B25/205 ,  C30B29/04 ,  C30B29/68 ,  C30B33/00

Abstract: Single crystal CVD diamond material comprising a total nitrogen concentration of at least 5 ppm and a neutral single substitutional nitrogen. Ns0, to total single substitutional nitrogen, Ns, ratio of at least 0.7. Such a diamond is observed to have a relatively low amount of brown colouration despite the relatively high concentration of nitrogen A method of making the single crystal diamond is also disclosed, the method including growing the CVD diamond in process gases comprising 60 to 200 ppm nitrogen, in addition to a carbon-containing gas, and hydrogen, wherein the ratio of carbon atoms in the carbon-containing gas to hydrogen atoms in the hydrogen gas is 0.5 to 1.5%.

公开(公告)号：US20140291490A1

公开(公告)日：2014-10-02

申请号：US14349535

申请日：2012-10-12

Applicant: Element Six Technologies Limited

Inventor： Ronald Hanson ,  Hannes Bernien ,  Matthew Lee Markham ,  Daniel James Twitchen

IPC: G02F3/00 ,  G06N99/00

CPC classification number: G02F3/00 ,  B82Y10/00 ,  B82Y20/00 ,  G02B6/00 ,  G06N99/002 ,  H01L29/127 ,  H01L29/66977 ,  H01L29/66984

Abstract: A device for achieving multi-photon interference, said device comprising: at least two solid state photon emitters, each solid state photon emitter comprising nuclear and electron spin states coupled together, each solid state photon emitter being configured to produce photon emission comprising a photon emission peak, wherein the photon emission peaks from different solid state photon emitters have a first frequency difference between peak intensities, and wherein the electron spin states of each solid state photon emitter are resolvable; an excitation arrangement configured to individually address the at least two solid state photon emitters; a plurality of optical out coupling structures wherein each solid state photon emitter is provided with an associated optical out coupling structure; a tuning arrangement configured to reduce the first frequency difference between the peak intensities of the photon emission peaks from the at least two solid state photon emitters to a second frequency difference which is smaller than the first frequency difference; a photon interference arrangement configured to overlap photon emissions from the at least two solid state emitters after tuning; and a detector arrangement configured to detect photon emissions from the at least two solid state emitters after tuning and passing through the photon interference arrangement, wherein the detector arrangement is configured to resolve sufficiently small differences in photon detection times that tuned photon emissions from the at least two solid state emitters are quantum mechanically indistinguishable resulting in quantum interference between indistinguishable photon emissions from different solid state photon emitters.

Abstract translation: 一种用于实现多光子干涉的装置，所述装置包括：至少两个固态光子发射器，每个固态光子发射器包括耦合在一起的核和电子自旋状态，每个固态光子发射器被配置为产生包含光子发射的光子发射 峰值，其中来自不同固态光子发射器的光子发射峰值具有峰值强度之间的第一频率差，并且其中每个固态光子发射器的电子自旋状态是可分辨的; 激励装置，被配置为单独地寻址所述至少两个固态光子发射器; 多个光学输出耦合结构，其中每个固态光子发射器设置有相关联的光耦合结构; 调谐装置，被配置为将来自所述至少两个固态光子发射器的所述光子发射峰的峰值强度之间的第一频率差减小到小于所述第一频率差的第二频率差; 配置为在调谐之后与来自所述至少两个固态发射器的光子发射重叠的光子干涉装置; 以及检测器装置，被配置为在调谐和通过光子干涉装置之后检测来自所述至少两个固态发射器的光子发射，其中所述检测器装置被配置为解决光子检测时间中足够小的差异， 两个固态发射体是量子力学上不可区分的，导致来自不同固态光子发射体的不可区分的光子发射之间的量子干涉。

公开(公告)号：US11807955B2

公开(公告)日：2023-11-07

申请号：US16962860

申请日：2019-01-24

Applicant: ELEMENT SIX TECHNOLOGIES LIMITED

Inventor： Matthew Lee Markham ,  Andrew Mark Edmonds

IPC: C30B25/20 ,  C30B25/00 ,  B01L3/00 ,  C30B25/04 ,  C30B29/04 ,  G01N24/10 ,  G01R33/30 ,  G01R33/60 ,  B82Y10/00

CPC classification number: C30B25/00 ,  B01L3/502707 ,  C30B25/04 ,  C30B29/04 ,  G01N24/10 ,  G01R33/302 ,  G01R33/60 ,  B01L2300/0627 ,  B82Y10/00

Abstract: A synthetic diamond material comprises a surface, wherein the surface comprises a first surface region comprising a first concentration of quantum spin defects. A second surface region has a predetermined area and is located adjacent to the first surface region, the second region comprising a second concentration of quantum spin defects. The first concentration of quantum spin defects is at least ten times greater than the second concentration of quantum spin defects, and at least one of the first or second surface regions comprises chemical vapour deposition, CVD, synthetic diamond. A method of producing the synthetic diamond material is also disclosed.

公开(公告)号：US20230053780A1

公开(公告)日：2023-02-23

申请号：US17759173

申请日：2021-03-04

Applicant: Element Six Technologies Limited ,  University of Warwick

Inventor： Joshua James Tully ,  Samuel James Cobb ,  Julie Victoria MacPherson ,  Mark Edward Newton ,  Matthew Lee Markham

IPC: C25F3/12 ,  C30B29/04 ,  C30B33/10 ,  C23C14/06 ,  C23C14/48 ,  C25F3/14 ,  C01B32/25 ,  C01B32/28

Abstract: A method for forming a diamond product. Diamond material is provided and a damage layer comprising sp2 bonded carbon is formed in the material. The presence of the damage layer defines a first diamond layer above and in contact with the damage layer and a second diamond layer below and in contact with the damage layer. The damage layer is electrochemically etched to separate it from the first layer, wherein the electrochemical etching is performed in a solution containing ions, the solution having an electrical conductivity of at least 500 μS cm−1, and wherein the ions are capable of forming radicals during electrolysis. The diamond product is also described.

公开(公告)号：US20240094004A1

公开(公告)日：2024-03-21

申请号：US17766883

申请日：2020-12-15

Applicant: ELEMENT SIX TECHNOLOGIES LIMITED

Inventor： Andrew Mark Edmonds ,  Matthew Lee Markham

IPC: G01C21/20 ,  G01S5/16

CPC classification number: G01C21/206 ,  G01S5/16

Abstract: A system and sensor device for determining geolocation data. A plurality of nodes, each at a predetermined location is provided. Each node emits a time-varying magnetic field, each time-varying magnetic field having a characteristic identifying the node. A sensor device comprises a magnetometer, the magnetometer configured to detect the time-varying magnetic field from at least one of the plurality of nodes, the magnetometer comprising diamond comprising at least one quantum spin defect. The sensor device has a processor configured to determine the identifying characteristic from the sensed time-varying magnetic field, and is further configured to determine geolocation data on the basis of at least the determined identifying characteristic.

公开(公告)号：US09335606B2

公开(公告)日：2016-05-10

申请号：US14349535

申请日：2012-10-12

Applicant: Element Six Technologies Limited

Inventor： Ronald Hanson ,  Hannes Bernien ,  Matthew Lee Markham ,  Daniel James Twitchen

IPC: G02F3/00 ,  B82Y10/00 ,  G06N99/00 ,  H01L29/66 ,  H01L29/12 ,  B82Y20/00 ,  G02B6/00

CPC classification number: G02F3/00 ,  B82Y10/00 ,  B82Y20/00 ,  G02B6/00 ,  G06N99/002 ,  H01L29/127 ,  H01L29/66977 ,  H01L29/66984

Abstract: A device for achieving multi-photon interference is provided based on nitrogen-vacancy defects in diamond material. Nitrogen-vacancy defects having a narrow band width and a similar emission frequency are identified within a high quality diamond material. The device has an excitation arrangement configured to individually address nitrogen-vacancy defects and optical outcoupling structures for increasing outcoupling of photons from each nitrogen-vacancy defect. A tuning arrangement is configured to tune the emission from each nitrogen-vacancy defect to reduce differences in frequency and the photons are overlapped. A detector is provided to detect the photon emissions. The detector is configured to resolve sufficiently small differences in photon detection times such that tuned photon emissions from the nitrogen-vacancy defects are quantum mechanically indistinguishable resulting in quantum interference between indistinguishable photon emissions from different nitrogen-vacancy defects.

Abstract translation: 基于金刚石材料中的氮空位缺陷提供了一种用于实现多光子干涉的装置。 在高质量的金刚石材料中识别具有窄带宽和类似发射频率的氮空位缺陷。 该装置具有被配置为单独地解决氮空位缺陷和光学输出耦合结构的激励装置，用于增加每个氮空位缺陷的光子的耦合。 调谐装置被配置为调整每个氮空位缺陷的发射以减少频率差异，并且光子重叠。 提供检测器以检测光子发射。 检测器被配置为解决光子检测时间中的足够小的差异，使得来自氮空位缺陷的调谐光子发射是量子机械上不可区分的，导致来自不同氮空位缺陷的不可区分的光子发射之间的量子干涉。