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

Transforming stand-alone qubits into a functional, general-purpose quantum processing unit
requires an architecture where many-body quantum entanglement can be generated and …

It has long been recognized that atomic emission of radiation is not an immutable property of
an atom, but is instead dependent on the electromagnetic environment and, in the case of …

We demonstrate a superconducting artificial atom with strong unidirectional coupling to a
microwave photonic waveguide. Our artificial atom is realized by coupling a transmon qubit …

This tutorial provides an intuitive and concrete description of the phenomena of
electromagnetic nonreciprocity that will be useful for readers with engineering or physics …

Superconducting qubits in a waveguide have long-range interactions mediated by photons
that cause the emergence of collective states. Destructive interference between the qubits …

We study nonreciprocal photon blockade in cavity optomagnonics, where a sphere of
ferromagnetic crystal supports two optical whispering-gallery modes and one magnon …

We propose an experimentally realizable nonreciprocal magnonic device at the single-
magnon level by exploiting magnon blockade in a magnon-based hybrid system. The …

Entanglement between distant massive mechanical oscillators is of particular interest in
quantum-enabled devices due to its potential applications in distributed quantum …

Non-reciprocal devices—in which light is transmitted with different efficiencies along
opposite directions—are key technologies for modern photonic applications, yet their …