摘要
The nitrogen vacancy(NV)center in diamond has been well applied in quantum sensing of electromagnetic field and temperature,where the sensitivity can be enhanced by the number of NV centers.Here,we used electron beam irradiation to increase the generation rate of NV centers by nearly 22 times.We systematically studied the optical and electronic properties of the NV center as a function of an electron irradiation dose,where the detection sensitivity of magnetic fields was improved.With such samples with dense NV centers,a sub-pico-Tesla sensitivity in magnetic fields detection can be achieved with optimal controls and detections.
作者
Bowen Zhao
Yang Dong
Shaochun Zhang
Xiangdong Chen
Wei Zhu
Fangwen Sun
赵博文;董杨;张少春;陈向东;祝巍;孙方稳(CAS Key Laboratory of Quantum Information,University of Science and Technology of China,Hefei 230026,China;CAS Center for Excellence in Quantum Information and Quantum Physics,University of Science and Technology of China,Hefei 230026,China;Hefei National Laboratory for Physical Science at Microscale,Department of Physics,University of Science and Technology of China,Hefei 230026,China)
基金
supported by the National Key Research and Development Program of China(No.2017YFA0304504)
the National Natural Science Foundation of China(Nos.91536219 and 91850102)
the Anhui Initiative in Quantum Information Technologies(No.AHY130000)
the Science Challenge Project(No.TZ2018003)
the Fundamental Research Funds for the Central Universities(No.WK2030000020)。
