In the past 20 years, impressive progress has been made both experimentally and
theoretically in superconducting quantum circuits, which provide a platform for manipulating …

This article presents a review of recent developments on various aspects of the quantum
Rabi model. Particular emphasis is given on the exact analytic solution obtained in terms of …

Abstract In circuit quantum electrodynamics,,,,,,,,,(QED), where superconducting artificial
atoms are coupled to on-chip cavities, the exploration of fundamental quantum physics in …

We measure the dispersive energy-level shift of an LC resonator magnetically coupled to a
superconducting qubit, which clearly shows that our system operates in the ultrastrong …

An atom in open space can be detected by means of resonant absorption and reemission of
electromagnetic waves, known as resonance fluorescence, which is a fundamental …

We study the quantum dynamics of a two-level system interacting with a quantized harmonic
oscillator in the deep strong coupling regime (DSC) of the Jaynes-Cummings model, that is …

A hundred years after the discovery of superconductivity, one fundamental prediction of the
theory, coherent quantum phase slip (CQPS), has not been observed. CQPS is a …

We present experimental observation of electromagnetically induced transparency (EIT) on
a single macroscopic artificial “atom”(superconducting quantum system) coupled to open 1D …

We theoretically study a circuit QED architecture based on a superconducting flux qubit
directly coupled to the center conductor of a coplanar waveguide transmission-line …

We present a method to implement ultrafast two-qubit gates valid for the ultrastrong coupling
and deep strong coupling regimes of light-matter interaction, considering state-of-the-art …