Figure 1
Credit: Alan Stonebraker

Figure 1: Schematic diagram showing the effect of strain on a crystal donor. (Left) With no voltage applied to the actuator (yellow), the crystal is unstrained; the electron donor wave function is depicted in red. (Right) A potential on the actuator strains the crystal, and alters the shape and energy of the wave function (blue). It brings the electron spin (long arrow) into resonance with an appropriately tuned microwave field.