Presentation Information

9:30 AM - 9:45 AM JST(12:30 AM - 12:45 AM UTC)

[9a-E311-3]All-optical quantum sensing using quantum-defect spins: theoretical analysis

〇Shunsuke Daimon¹, Kazuya Harii¹, Hidenori Hiraishi², Yasuto Hijikata², Yu-ichiro Matsushita^1,3,4, Takeshi Ohshima^1,5, Makoto Kohda^1,5,6 (1.QST, 2.Saitama Univ., 3.Univ. of Tokyo, 4.Quemix, 5.Tohoku Univ., 6.Univ. of Washington)

Keywords:

Quantum sensing,Quantum defects

To enhance the sensitivity of all-optical quantum sensing using silicon vacancies in silicon carbide, we theoretically analyzed the fluorescence processes of electrons localized around the defects. We constructed a theoretical model that incorporates both the orbital and spin states of the electrons and successfully reproduced experimental results. We showed that fluorescence can change even without microwaves due to intrinsic interactions, providing guidelines for the design of simple and highly sensitive magnetic sensors.

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