Quantum-mechanical effects at the macroscopic level were first explored in Josephson-
junction-based superconducting circuits in the 1980s. In recent decades, the emergence of …

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

In this review we look at the concepts and state-of-the-art concerning the strong coupling of
surface plasmon-polariton modes to states associated with quantum emitters such as …

This article reviews recent theoretical and experimental advances in the fundamental
understanding and active control of quantum fluids of light in nonlinear optical systems. In …

The ability to generate particles from the quantum vacuum is one of the most profound
consequences of Heisenberg's uncertainty principle. Although the significance of vacuum …

Creating a train of single photons and monitoring its propagation and interaction is
challenging in most physical systems, as photons generally interact very weakly with other …

Abstract The Jaynes‐Cummings model describes the coupling between photons and a
single two‐level atom in a simplified representation of light‐matter interactions. In circuit …

Single-photon detection is a requisite technique in quantum-optics experiments in both the
optical and the microwave domains. However, the energy of microwave quanta are four to …

We explore photon coincidence counting statistics in the ultrastrong coupling regime, where
the atom-cavity coupling rate becomes comparable to the cavity resonance frequency. In this …

Single-photon detection is an essential component in many experiments in quantum optics,
but it remains challenging in the microwave domain. We realize a quantum nondemolition …