Experimental system design for the integration of trapped-ion and superconducting qubit systems

TL;DR

This paper proposes a design for integrating ion trapping and superconducting qubit systems, addressing key technical challenges to enable quantum hybrid systems with potential for scalable quantum computing.

Contribution

It introduces a microfabricated ion trap coupled to a superconducting microwave circuit and discusses infrastructure solutions for combining these technologies in a dilution fridge.

Findings

Coupling strength in the tens of kHz achieved in simulations

Design and fabrication process for integrated ion trap and superconducting circuit

Practical solutions for infrastructure integration in current technology

Abstract

We present a design for the experimental integration of ion trapping and superconducting qubit systems as a step towards the realization of a quantum hybrid system. The scheme addresses two key difficulties in realizing such a system; a combined microfabricated ion trap and superconducting qubit architecture, and the experimental infrastructure to facilitate both technologies. Developing upon work by Kielpinski et al. [1] we describe the design, simulation and fabrication process for a microfabricated ion trap capable of coupling an ion to a superconducting microwave LC circuit with a coupling strength in the tens of kHz. We also describe existing difficulties in combining the experimental infrastructure of an ion trapping setup into a dilution fridge with superconducting qubits and present solutions that can be immediately implemented using current technology.