Microfabrication of an 8-qubit processor chip for a trapped-ion quantum computer demonstrator

Multilayer surface-electrode ion traps provide a scalable platform for quantum processors. In this paper we present a demonstrator chip designed to implement an 8-qubit shuttling-based quantum processor with chip-integrated microwave control for quantum gates. The design is based on a linear Paul trap geometry. All-to-all connectivity will be implemented through ion swapping. The production of the trap chip is carried out with multistep microfabrication. The 2-layer ion trap chip with two storage registers and an interaction zone has a size of 5 mm x 10 mm . Flexibility in signal routing is improved through the use of thick and planarised metal–dielectric layers. • Fabrication of multilayer asymmetric ion trap chip aiming to enable an 8-qubit quantum computer. • Brief insight into the linear trap chip design with quantum charged-coupled device architecture. • Wafer level multistep microfabrication procedure of the chip production. • Chip characterisation with respect to the target design features and trapping readiness.