A microfabricated ion trap with integrated microwave circuitry

TL;DR

This paper presents a novel microfabricated surface-electrode ion trap integrated with microwave circuitry, enabling efficient near-field microwave control of ion qubits for quantum information processing.

Contribution

It introduces a new design and fabrication of an ion trap with integrated microwave components optimized for quantum manipulation.

Findings

Successful fabrication and testing of the integrated ion trap.

Demonstrated microwave field gradient suitable for qubit manipulation.

Characterized microwave field using hyperfine transitions in 43Ca+ ions.

Abstract

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 multiqubit entanglement. The microwave field near the centre of the trap is characterised by driving hyperfine transitions in a single laser-cooled 43Ca+ ion.