Towards all-electronic control of trapped ion qubits

We outline progress towards all-electronic control of trapped ion qubits at Oxford Ionics. In particular, we present a new technique we developed to control ions in separate interaction regions of a multi-zone trap. We use an electric field, which can be localized to each zone, in combination with a spin-dependent gradient to perform single-qubit rotations. Both the phase and amplitude of the rotation can be controlled using the electric field. We demonstrate this interaction on a single ion using both laser-based and magnetic field gradients in a surface-electrode ion trap, and measure the localization of the electric field.