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 …

This review describes the emerging field of waveguide quantum electrodynamics concerned
with the interaction of photons propagating in a waveguide with localized quantum emitters …

Quantum emitters respond to resonant illumination by radiating part of the absorbed energy.
A component of this radiation field is phase coherent with the driving tone, whereas another …

Quantum bits, or qubits, are an example of coherent circuits envisioned for next-generation
computers and detectors. A robust superconducting qubit with a coherent lifetime of O (100 …

Photon detectors are an elementary tool to measure electromagnetic waves at the quantum
limit, and are heavily demanded in the emerging quantum technologies such as …

The major task of detecting axions or axion-like particles has two challenges. On the one
hand, the ultimate sensitivity is required, down to the energy of a single microwave photon of …

Single photon detection is a key resource for sensing at the quantum limit and the enabling
technology for measurement-based quantum computing. Photon detection at optical …

We have realized a new interaction between superconducting qubits and a readout cavity
that results in the displacement of a coherent state in the cavity, conditioned on the state of …

Josephson meta-materials have recently emerged as very promising platform for
superconducting quantum science and technologies. Their distinguishing potential resides …

The field of propagating quantum microwaves is a relatively new area of research that is
receiving increased attention due to its promising technological applications, both in …