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Radio-Frequency Magnetometry Using a Single Electron Spin
2013
Physical Review Letters
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We experimentally demonstrate a simple and robust protocol for the detection of weak radio-frequency magnetic fields using a single electron spin in diamond. Our method relies on spin locking, where the Rabi frequency of the spin is adjusted to match the MHz signal frequency. In a proof-of-principle experiment we detect a 7.5 MHz magnetic probe field of 40 nT amplitude with <10 kHz spectral resolution over a T_1-limited noise floor of 0.3 nT/rtHz. Rotating-frame magnetometry may provide a
doi:10.1103/physrevlett.110.017602
pmid:23383837
fatcat:egbb5urkqfbj3agokgxb5eu3uq