Packaging Large-scale Superconducting Quantum Computer with Airbridge

For superconducting circuits with quantum error correction, a two-dimensional array of qubits is required. Recently it is challenged to build a practical large-scale superconducting circuit with the array on a chip by using this three-dimensional wiring technique to control the qubits, while maintaining high fidelity operations. In this talk, we present the novel arrangement of the array of qubits without non-monolithic special technology of three-dimensional wiring. In this architecture, standard two-dimensional external lines are adopted and local crossovers of interqubit connections are required. The crossovers are realized by airbridge technology. We show this novel architecture and the result of quality factor of resonator with airbridge at center line.