Individual control of barium ion qubits for quantum information processing

We present our progress in developing a programmable quantum processor with up to 16 barium ion qubits. Our system utilizes barium's visible-wavelength transitions and long-lived quantum states. We use a Sandia-fabricated surface ion trap with 94 DC electrodes for precise confining potential control. Our hardware innovations include specialized methods for radioactive source preparation and a centrally mounted trap that enables high optical access from multiple directions while maintaining optimized vacuum pressure for long ion lifetime. We implement novel waveguide technology for controlling laser parameters at each ion with negligible crosstalk. As part of the Open Quantum Design initiative, this system will provide remote access for researchers.