Digital Lock-in for Magnetic Imaging with Nitrogen Vacancy Centers in Diamonds

Systems and methods for measuring integrated circuit (IC) activity use the spatial resolution of optically detected magnetic resonance (ODMR) of nitrogen-vacancies (NV) in diamond. A quantum diamond microscope (QDM) can be used to capture a series of images of the fluorescence of NV centers present in diamond as a function of an external microwave field. An IC device placed adjacent to the diamond of the QDM will impact the fluorescence of the NV center, and this magnetic field-dependent fluorescence can be measured and used to generate a map of the magnetic field of the IC device.

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