[15p-F205-1~10] NV center in diamond: quantum information, quantum sensing, and bio applications

[15p-F205-5] Charge Stabilized Diamond Surface for N-V Center NMR

〇Hiroshi Kawarada^1,2, Hayate Yamano¹, Sora Kawai¹, Miki Kajiya¹, Kanami Katou¹, Taisuke Kageura¹, Masafumi Inaba¹, Takushin Okada¹, Itaru Higashimata¹, Moriyoshi Haruyama^3,5, Takashi Tanii¹, Keisaku Yamada³, Shinobu Onoda³, Tokuyuki Teraji⁴, Wataru Kada⁵, Osamu Hanaizumi⁵, Jun-ichi Isoya⁶ (1.Waseda Univ., 2.Inst.for Mat. Sci., 3.NIQRST, 4.NIMS, 5.Gunma Univ., 6.Tsukuba Univ.)

Keywords:diamond, NV center, Rabi oscillation

We stabilized the NV⁻ state of very shallow NV centers (~2.6nm from the surface) created by 1.2-keV nitrogen ion implantation by oxygen annealing. This improvement indicates that we can suppress the upward surface band bending and the surface potential fluctuations using the Fermi level pinning originating from oxygen-terminated diamond surfaces.