A microfabricated ion trap with integrated microwave circuitry
D. T. C. Allcock, T. P. Harty, Christopher J. Ballance, B. C. Keitch, Norbert M. Linke, D. N. Stacey, D. M. Lucas · Applied Physics Letters · 2013
We describe the design, fabrication, and testing of a surface-electrode ion trap, which incorporates microwave waveguides, resonators, and coupling elements for the manipulation of trapped ion qubits using near-field microwaves. The trap is optimised to give a large microwave field gradient to allow state-dependent manipulation of the ions' motional degrees of freedom, the key to multi-qubit entanglement. The microwave field near the centre of the trap is characterised by driving hyperfine transitions in a single laser-cooled 43Ca+ ion.