title: Radio-frequency magnetometry using a single electron spin.
abstract: 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. Rotating-frame magnetometry may provide a direct and sensitive route to high-resolution spectroscopy of nanoscale nuclear spin signals.
authors: Department of Physics, ETH Zurich, Schafmattstrasse 16, 8093 Zurich, Switzerland.
authors: M
authors: M
authors: Loretz
authors: T
authors: T
authors: Rosskopf
authors: C L
authors: CL
authors: Degen