Microwave-Free Magnetometry Based On Cross-Relaxation Resonances In Diamond Nitrogen-Vacancy Centers
PHYSICAL REVIEW A(2017)
摘要
We study cross-relaxation resonances between differently oriented groups of nitrogen-vacancy (NV) centers at small external magnetic fields. These resonances are observed using resonant optical pumping on the NV-center zero phonon line. We suggest a magnetometry protocol that is based on measuring the positions of cross-relaxation resonances on the fluorescence scan. This protocol does not require microwave radiation and can be used to find all components of the unknown magnetic field vector. A room-temperature variant of the protocol with off-resonant optical pumping is also briefly discussed.
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关键词
Magnetic Resonance Imaging,Magnetic Sensing
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