公开(公告)号：US20230154318A1

公开(公告)日：2023-05-18

申请号：US17527895

申请日：2021-11-16

Applicant: X Development LLC

Inventor： Christian Thieu Nguyen ,  Stefan Bogdanovic

IPC: G08G1/04 ,  G01R33/12 ,  G01R33/032

CPC classification number: G08G1/04 ,  G01R33/032 ,  G01R33/1284

Abstract: A traffic monitoring system includes an electron spin defect magnetometer in a vicinity of a roadway, the electron spin defect magnetometer configured to detect magnetic field signals induced by transit entities in the vicinity of the roadway. The electron spin defect magnetometer includes an electron spin defect body including a plurality of lattice point defects, an optical source arranged to excite the plurality of lattice point defects, and a photodetector arranged to receive photoluminescence emitted by the plurality of lattice point defects.

公开(公告)号：US11774384B2

公开(公告)日：2023-10-03

申请号：US17149848

申请日：2021-01-15

Applicant: X Development LLC

Inventor： Stefan Bogdanovic ,  Christian Thieu Nguyen

IPC: G01N24/10 ,  G01R33/32 ,  G01R33/032

CPC classification number: G01N24/10 ,  G01R33/032 ,  G01R33/32

Abstract: A magnetometry apparatus includes an array of magnetometer pixels. Each magnetometer pixel includes an electron spin defect body including a plurality of lattice point defects, and a microwave field transmitter operable to apply a microwave field to the electron spin defect body. The apparatus may also include an optical source configured to emit input light of a first wavelength that excites the plurality of lattice point defects of the electron spin defect bodies from a ground state to an excited state, and a photodetector arranged to receive photoluminescence of a second wavelength emitted from a first electron spin defect body of a first magnetometer pixel of the array of magnetometer pixels. The second wavelength is different from the first wavelength.

公开(公告)号：US20220206086A1

公开(公告)日：2022-06-30

申请号：US17139807

申请日：2020-12-31

Applicant: X Development LLC

Inventor： Christian Thieu Nguyen ,  Stefan Bogdanovic

IPC: G01R33/028 ,  G01R33/032 ,  G01N24/10

Abstract: A magnetometer includes an electron spin defect body including a plurality of lattice point defects. A microwave field transmitter is operable to apply a microwave field to the electron spin defect body. An optical source is configured to emit input light of a first wavelength that excites the plurality of lattice point defects of the electron spin defect body from a ground state to an excited state. A first optical fiber has an input end optically coupled to the optical source and an output end. The output end is attached to a first face of the electron spin defect body and is arranged to direct the input light into the first face of the electron spin defect body. A second optical fiber has an output end and an input end. A photodetector is optically coupled to the output end of the second optical fiber.

公开(公告)号：US20230118060A1

公开(公告)日：2023-04-20

申请号：US18084370

申请日：2022-12-19

Applicant: X Development LLC

Inventor： Christian Thieu Nguyen ,  Stefan Bogdanovic

IPC: G01R33/028 ,  G01N24/10 ,  G01R33/032

Abstract: A magnetometer includes an electron spin defect body including a plurality of lattice point defects. A microwave field transmitter is operable to apply a microwave field to the electron spin defect body. An optical source is configured to emit input light of a first wavelength that excites the plurality of lattice point defects of the electron spin defect body from a ground state to an excited state. A first optical fiber has an input end optically coupled to the optical source and an output end. The output end is attached to a first face of the electron spin defect body and is arranged to direct the input light into the first face of the electron spin defect body. A second optical fiber has an output end and an input end. A photodetector is optically coupled to the output end of the second optical fiber.

公开(公告)号：US11531073B2

公开(公告)日：2022-12-20

申请号：US17139807

申请日：2020-12-31

Applicant: X Development LLC

Inventor： Christian Thieu Nguyen ,  Stefan Bogdanovic

IPC: G01R33/028 ,  G01N24/10 ,  G01R33/032

Abstract: A magnetometer includes an electron spin defect body including a plurality of lattice point defects. A microwave field transmitter is operable to apply a microwave field to the electron spin defect body. An optical source is configured to emit input light of a first wavelength that excites the plurality of lattice point defects of the electron spin defect body from a ground state to an excited state. A first optical fiber has an input end optically coupled to the optical source and an output end. The output end is attached to a first face of the electron spin defect body and is arranged to direct the input light into the first face of the electron spin defect body. A second optical fiber has an output end and an input end. A photodetector is optically coupled to the output end of the second optical fiber.

公开(公告)号：US20220228998A1

公开(公告)日：2022-07-21

申请号：US17149848

申请日：2021-01-15

Applicant: X Development LLC

Inventor： Stefan Bogdanovic ,  Christian Thieu Nguyen

IPC: G01N24/10 ,  G01R33/032 ,  G01R33/32

Abstract: A magnetometry apparatus includes an array of magnetometer pixels. Each magnetometer pixel includes an electron spin defect body including a plurality of lattice point defects, and a microwave field transmitter operable to apply a microwave field to the electron spin defect body. The apparatus may also include an optical source configured to emit input light of a first wavelength that excites the plurality of lattice point defects of the electron spin defect bodies from a ground state to an excited state, and a photodetector arranged to receive photoluminescence of a second wavelength emitted from a first electron spin defect body of a first magnetometer pixel of the array of magnetometer pixels. The second wavelength is different from the first wavelength.