[16p-A408-1~18] 6.2 Carbon-based thin films

[16p-A408-10] Dephasing Time Extension by Spin Bath Drive for Enhancing the Sensitivity of Diamond Quantum Sensor

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

Keywords:NV center

One of the factors limiting the high sensitivity of magnetic sensors using NV centers is their interaction with the paramagnetic spin bath, called the P1 center, that surrounds the NV centers. Removal of this interaction is achieved by manipulating the P1 centers. We have applied spin bath drive to the Continuously Excited Ramsey method, which has been reported as a promising method to increase sensitivity, and have studied T₂^* extension. In this study, we investigated the extension of T₂^* by changing the intensity of the static magnetic field applied to the NV center.