Vector-magnetic-field sensing via multifrequency control of nitrogen-vacancy centers in diamond

Sayaka Kitazawa, Yuichiro Matsuzaki, Soya Saijo, Kosuke Kakuyanagi, Shiro Saito, Junko Hayase

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9 Citations (Scopus)


An ensemble of nitrogen-vacancy (NV) centers in diamond is an attractive device to detect small magnetic fields. In particular, by exploiting the fact that the NV center can be aligned along one of four different axes due to C3ν symmetry, it is possible to extract information concerning vector magnetic fields. However, in the conventional scheme, low readout contrasts of the NV centers significantly decrease the sensitivity of the vector-magnetic-field sensing. Here, we propose a way to improve the sensitivity of the vector-magnetic-field sensing of the NV centers using multifrequency control. Since the Zeeman energy of the NV centers depends on the direction of the axis, we can independently control the four types of NV centers using microwave pulses with different frequencies. This allows us to use every NV center for the vector field detection in parallel, which effectively increases the readout contrast. Our results pave the way to realize a practical diamond-based vector field sensor.

Original languageEnglish
Article number042115
JournalPhysical Review A
Issue number4
Publication statusPublished - 2017 Oct 26


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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