The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 14, 2026
Filed:
Oct. 26, 2022
Kyoto University, Kyoto, JP;
Nissin Electric Co., Ltd., Kyoto, JP;
Norikazu Mizuochi, Kyoto, JP;
Ernst David Herbschleb, Kyoto, JP;
Hiroki Morishita, Kyoto, JP;
Hiroya Saito, Kyoto, JP;
Hiroshige Deguchi, Kyoto, JP;
Natsuo Tatsumi, Kyoto, JP;
Tsukasa Hayashi, Kyoto, JP;
Kyoto University, Kyoto, JP;
NISSIN ELECTRIC CO., LTD., Kyoto, JP;
Abstract
The present invention measures, with high sensitivity, the phase difference between a plurality of physical fields. A phase difference measurement device () comprises: an electromagnetic irradiation unit () that repeatedly irradiates a quantum sensor element () with electromagnetic waves for manipulating an electron spin state of the quantum sensor element () which changes via interaction with a second physical field or a first physical field generated by an AC signal; and a phase difference measurement unit () that acquires a plurality of electron spin states after interaction with the second physical field or the first physical field, and measures the phase difference between a plurality of physical fields on the basis of the acquired plurality of electron spin states.