Abstract
Quantum sensors based on nitrogen-vacancy (NV) centers in diamond have attracted intensive interest due to their superior measurement sensitivity even at the single-spin level. Such a sensitive quantum spin sensor incorporating a scanning apparatus may offer a way to image spins on surfaces and micromagnetic structures. Apart from high sensitivity, superspatial resolution represents another appealing feature, although it is challenging to achieve for a NV-based scanning microscope. Here, we propose a hybrid scanning microscope scheme under ambient conditions by using single-nitrogen-vacancy-center spin in diamond to achieve high spatial resolution. With a detailed numerical analysis, we demonstrate that it is feasible to detect and distinguish individual spins with a nanometer spatial resolution.
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