US 12,379,428 B2
Magnetic field measurement apparatus and magnetic field measurement method
Shingo Hamada, Natori (JP); Tsutomu Otsuka, Natori (JP); Yoshiharu Yoshii, Natori (JP); Norikazu Mizuochi, Kyoto (JP); and Yuki Takemura, Kyoto (JP)
Assigned to SUMIDA CORPORATION, (JP); and Kyoto University, (JP)
Appl. No. 18/560,860
Filed by SUMIDA CORPORATION, Tokyo (JP); and Kyoto University, Kyoto (JP)
PCT Filed Mar. 8, 2022, PCT No. PCT/JP2022/009990
§ 371(c)(1), (2) Date Nov. 14, 2023,
PCT Pub. No. WO2022/244399, PCT Pub. Date Nov. 24, 2022.
Claims priority of application No. 2021-084224 (JP), filed on May 18, 2021.
Prior Publication US 2024/0255588 A1, Aug. 1, 2024
Int. Cl. G01R 33/00 (2006.01); G01R 33/383 (2006.01); G01R 33/60 (2006.01)
CPC G01R 33/0011 (2013.01) [G01R 33/383 (2013.01); G01R 33/60 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A magnetic field measurement apparatus, comprising:
a magnetic resonance member for performing an electron spin quantum operation in response to application of a microwave to the magnetic resonance member;
a high-frequency magnetic field generator for applying the microwave to the magnetic resonance member;
a magnet for applying a static magnetic field to the magnetic resonance member;
an irradiating device for irradiating the magnetic resonance member with light of a specific wavelength; and
a flux transformer comprising a primary coil for sensing a measurement target magnetic field and a secondary coil electrically connected to the primary coil for applying an application magnetic field corresponding to the sensed measurement target magnetic field to the magnetic resonance member;
wherein the magnetic resonance member is arranged at a position in a hollow part of the secondary coil of the flux transformer and in a hollow part of the magnet.