Figure 1: Experimental setup and principle of the MW magnetometry.
From: High-resolution vector microwave magnetometry based on solid-state spins in diamond
(a) Schematic view of the setup for the demonstration of vector MW magnetometry. The 532-nm green laser is focused several micrometres below the top surface of the diamond. A copper wire of 22 μm diameter above the diamond plate is used for generating the MW field. The MW passes through the copper wire and generates a linearly polarized oscillating magnetic field (red lines). (b) Zeeman splitting of the electron spin of the NV centre. (c) Schematic view of the MW magnetic field vectors and axis of the NV centre in the laboratory frame. The dark grey surface is perpendicular to the axis of the NV centre. (d) Bloch sphere view of the dynamics of the spin state.
