[10a-N205-1~9] CS.8 Code-sharing session of 6.2&KS1

11:30 AM - 11:45 AM JST(2:30 AM - 2:45 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[10a-N205-9] Pressure Dependent Zero-Field Splitting in the Excited Triplet State ofDiamond NV^- Centers

〇(DC)Ryotaro Suda¹, Kenshin Uriu², Kouki Yamamoto¹, Misaki Sasaki², Kento Sasaki¹, Mari Einaga², Katsuya Shimizu², Kensuke Kobayashi^1,3,4 (1.Dept. Phys. UTokyo, 2.KYOKUGEN UOsaka, 3.IPI UTokyo, 4.TSQS UTokyo)

Keywords:

Diamond NV center,high-pressure,Optically detected magnetic resonance

Diamond nitrogen-vacancy (NV) centers are quantum sensors that, through optically detected magnetic resonance (ODMR), provide high-spatial-resolution mapping of magnetic fields and pressure, making them indispensable in gigapascal-class high-pressure studies. Although the pressure dependence of the ground-state zero-field splitting D_gs is well characterized, no experimental data exist for the corresponding excited-state splitting D_es. Here we report the first measurements of D_es under pressure and evaluate both the feasibility of pressure sensing via excited-state ODMR and the pressure dependence of the non-radiative intersystem-crossing rate.