E. Moreva, E. Bernardi, P. Traina, G. Petrini, S. D. Tchernij, J. Forneris, F. Picollo, V. Pugliese, A. Sosso, Ž. Pastuović, I. Degiovanni, P. Olivero, M. Genovese
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Magnetic Sensing with Nitrogen-Vacancy Centers Based on Lock-in Detection
Nitrogen-vacancy (NV) centers in diamond allow measurement of magnetic fields at nanoscale. The working principle is based on the measurement of a NV center resonance frequency shift, detected by monitoring the center's photoluminescence. Here we present a technique based on lock-in detection and simultaneous excitation of the three peaks corresponding to hyperfine interaction between the NV center and the 14N nucleus.
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