Fig. 5: Ion trap design.
From: Individual trapped-ion addressing with adjoint-optimized multimode photonic circuits

a A section of the trap’s layout. b The pseudo-potential generated by the RF electrodes at the location of the ion (star in a). X and Z represent directions parallel and perpendicular to the trap surface, respectively. The color gradient illustrates the potential, revealing a minimum near (X, Z) = (0, 68) μm. All dimensions in the figure are in micrometers (μm).