When molecules are coupled to an optical cavity, new light–matter hybrid states, so-called
polaritons, are formed due to quantum light–matter interactions. With the experimental …

The Jaynes–Cummings Model (JCM) has recently been receiving increased attention as
one of the simplest, yet intricately nonlinear, models of quantum physics. Emphasising the …

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

Using a submillimeter-sized YIG (yttrium-iron-garnet) sphere mounted in a magnetic-field-
focusing cavity, we demonstrate an ultrahigh cooperativity of 1 0 5 between magnon and …

Cavity and circuit QED study light-matter interaction at its most fundamental level. Yet, this
interaction is most often neglected when considering the coupling of this system with an …

We consider a system composed of a two-level system (ie, a qubit) and a harmonic oscillator
in the ultrastrong-coupling regime, where the coupling strength is comparable to the qubit …

In a microcavity, light-matter coupling is quantified by the vacuum-Rabi frequency Ω R.
When Ω R is larger than radiative and nonradiative loss rates, the system eigenstates …

A generalized version of the rotating-wave approximation for the single-mode spin-boson
Hamiltonian is presented. It is shown that performing a simple change of basis prior to …

This article reviews theoretical methods developed in the last decade to understand cavity
quantum electrodynamics in the ultrastrong‐coupling regime, where the strength of the light …

We present a theoretical study of a superconducting charge qubit dispersively coupled to a
transmission line resonator. Starting from a master equation description of this coupled …