Nanoscale electrometry based on a magnetic-field-resistant spin sensor

• URL: http://arxiv.org/abs/2004.04385v1
• Date: Thu, 9 Apr 2020 06:57:49 GMT
• Title: Nanoscale electrometry based on a magnetic-field-resistant spin sensor
• Authors: Rui Li, Fei Kong, Pengju Zhao, Zhi Cheng, Zhuoyang Qin, Mengqi Wang, Qi Zhang, Pengfei Wang, Ya Wang, Fazhan Shi, and Jiangfeng Du
• Abstract summary: The nitrogen-vacancy (NV) center is a potential atomic-scale spin sensor for electric field sensing. We propose a robust electrometric method utilizing continuous dynamic decoupling (CDD) technique.
• Score: 17.20530841924012
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The nitrogen-vacancy (NV) center is a potential atomic-scale spin sensor for electric field sensing. However, its natural susceptibility to the magnetic field hinders effective detection of the electric field. Here we propose a robust electrometric method utilizing continuous dynamic decoupling (CDD) technique. During the CDD period, the NV center evolves in a dressed-state space, where the sensor is resistant to magnetic fields but remains sensitive to electric fields. As an example, we use this method to isolate the electric noise from a complex electro-magnetical environment near diamond surface via measuring the dephasing rate between dressed states. By reducing the surface electric noise with different covered liquids, we observe an unambiguous relation between the dephasing rate and the dielectric permittivity of the liquid, which enables a quantitative investigation of electric noise model near diamond surface.

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