ダイヤモンド中のスピンアンサンブル量子センサを用いた電界ベクトル計測を実現

ダイヤモンド中のスピンアンサンブル量子センサを用いた電界ベクトル計測を実現

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工学院 波多野睦子教授とAmir Yacoby特任教授の国際共著論文が PHYS. REV. APPLIED  に掲載されました。

“Vector Electrometry in a Wide-Gap-Semiconductor Device Using a Spin-Ensemble Quantum Sensor”

(DOI: 10.1103/PhysRevApplied.14.044049

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<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.