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Quantum sensing based on nitrogen-vacancy centers in diamond has shown excellent properties. Combined with the imaging technique, it shows exciting practicability. Here, we demonstrate the simultaneously imaging technique of magnetic field and temperature using a wide-field quantum diamond microscope. We describe the operating principles of the diamond microscope and report its sensitivity (magnetic field ∼ 1.8 μ T/Hz 1 / 2 ${\sim}1.8~\mu \mbox{T/Hz}^{1/2}$ and temperature ∼ 0.4 K/Hz 1 / 2 ${\sim}0.4~\mbox{K/Hz}^{1/2}$ ), spatial resolution (1.3  μ m), and field of view ( 400 × 300 μ m 2 $400 \times 300~\mu \mbox{m}^{2}$ ). Finally, we use the microscope to obtain images of an integrated cell heater and a PCB, demonstrating its ability in the application of magnetic field and temperature simultaneously imaging at wide-field.

Simultaneous imaging of magnetic field and temperature using a wide-field quantum diamond microscope