Circuit QED and engineering charge based superconducting qubits

TL;DR

This paper reviews recent progress in superconducting circuits, especially charge-based qubits, highlighting advances in circuit QED where artificial atoms are strongly coupled to microwave photons, crucial for quantum information processing.

Contribution

It provides an overview of developments in charge-based superconducting qubits and the state of the art in circuit QED technology.

Findings

Significant progress in generating and manipulating quantum coherence in superconducting circuits.

Successful realization of circuit QED with strong coupling between artificial atoms and microwave photons.

Enhanced hardware capabilities for quantum information manipulation.

Abstract

The last two decades have seen tremendous advances in our ability to generate and manipulate quantum coherence in mesoscopic superconducting circuits. These advances have opened up the study of quantum optics of microwave photons in superconducting circuits as well as providing important hardware for the manipulation of quantum information. Focusing primarily on charge-based qubits, we provide a brief overview of these developments and discuss the present state of the art. We also survey the remarkable progress that has been made in realizing circuit quantum electrodynamics (QED) in which superconducting artificial atoms are strongly coupled to individual microwave photons.