US 11,747,414 B2
Measurement device having a microwave generator in which a capacitor spans coil legs
Yuki Takemura, Natori (JP); Yoshiharu Yoshii, Natori (JP); and Masaki Saito, Ueda (JP)
Assigned to SUMIDA CORPORATION
Filed by SUMIDA CORPORATION, Tokyo (JP)
Filed on Dec. 7, 2021, as Appl. No. 17/457,931.
Application 17/457,931 is a continuation of application No. 16/783,847, filed on Feb. 6, 2020, granted, now 11,221,381.
Claims priority of application No. 2019-031070 (JP), filed on Feb. 22, 2019.
Prior Publication US 2022/0091201 A1, Mar. 24, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G01R 33/26 (2006.01)
CPC G01R 33/26 (2013.01) 8 Claims
OG exemplary drawing
 
1. A measurement device comprising:
a microwave generator configured to generate a microwave, the microwave being configured for an electron spin quantum operation based on a Rabi oscillation, the microwave generator having:
a coil configured to emit the microwave, the coil having first and second ends, first and second terminal strips defining first and second legs continuously extending from the first and second ends of the coil, respectively; and
an electrostatic capacitor spanning the first and second legs, the electrostatic capacitor being electrically connected in parallel to the coil;
an electron spin resonance member to which the microwave is irradiated; and
an observation system configured to measure a physical quantity in a measured field in response to a state of the electron spin resonance member when the electron spin resonance member is irradiated by the microwave,
wherein both terminals of the electrostatic capacitor are electronically physically connected to the first and second legs of the coil, respectively.