Producing cluster states in charge qubits and flux qubits

TL;DR

This paper presents a method for efficiently generating highly-entangled cluster states in various solid-state qubits, demonstrating a practical approach for quantum computation with charge and flux qubits.

Contribution

It introduces a 'one-touch' entanglement operation for charge qubits and analyzes the robustness of cluster states in non-uniform solid-state qubits.

Findings

Cluster states can be generated efficiently via gate bias tuning.

The method is applicable to both semiconducting and superconducting charge qubits.

Cluster states show robustness against non-uniformities in solid-state systems.

Abstract

We propose a method to efficiently generate cluster states in charge qubits, both semiconducting and superconducting, as well as flux qubits. We show that highly-entangled cluster states can be realized by a `one-touch' entanglement operation by tuning gate bias voltages for charge qubits. We also investigate the robustness of these cluster states for non-uniform qubits, which are unavoidable in solid-state systems. We find that quantum computation based on cluster states is a promising approach for solid-state qubits.