[22p-A601-1~17] CS.9 Code-sharing Session of 6.2 & KS

2:15 PM - 2:30 PM JST(5:15 AM - 5:30 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[22p-A601-6] Sensitivity improvement of Diamond Quantum Sensors by Continuously Excited Ramsey Method

〇Yuta Araki¹, Ikuya Fujisaki¹, Zehan Li¹, Yuji Hatano¹, Takeharu Sekiguchi¹, Takayuki Iwasaki¹, Mutsuko Hatano¹ (1.Tokyo Tech.)

Keywords:

NV center

The Continuously Excited (CE) Ramsey method has attracted attention as a method with higher sensitivity than CW-ODMR.CE-Ramsey is a method to accumulate magnetic field signals while excitating NV centers with light, and the dynamics is complicated by the spin polarization caused by the light.In this study, we clarify how the contrast and phase relaxation, which directly affect the sensitivity, change with laser power and lock-in period, and pave the way to higher sensitivity.