Vector Electrometry in a Wide-Gap-Semiconductor Device Using a Spin-Ensemble Quantum Sensor
Bang Yang, Takuya Murooka, Kosuke Mizuno, Kwangsoo Kim, Hiromitsu Kato, Toshiharu Makino, Masahiko Ogura, Satoshi Yamasaki, Marek E. Schmidt, Hiroshi Mizuta, Amir Yacoby, Mutsuko Hatano, Takayuki Iwasaki
Abstract
Nitrogen-vacancy (N-V) centers in diamond work as a quantum electrometer. Using an ensemble state of N-V centers, we propose vector electrometry and demonstrate measurements in a diamond electronic device. A transverse electric field applied to the N-V axis under a high voltage is measured, while applying a transverse magnetic field. The response of the energy-level shift against the electric field is significantly enhanced compared with that against an axial magnetic field. Repeating the measurement of the transverse electric field for multiple N-V axes, we obtain the components of the electric field generated in the device.