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

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

Advanced photonic nanostructures are currently revolutionizing the optics and photonics
that underpin applications ranging from light technology to quantum-information processing …

Dielectric microcavities with quality factors (Q-factors) in the thousands to billions markedly
enhance light–matter interactions, with applications spanning high-efficiency on-chip lasing …

We propose an all-optical approach to achieve optical nonreciprocity on a chip by quantum
squeezing one of two coupled resonator modes. By parametric pumping a χ (2)-nonlinear …

Chirality or handedness distinguishes an object from its mirror images, such as the spread
thumb, index finger, and middle finger of the right and left hand. In mathematics, it is …

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 …

Color centers are point defects in crystals that can provide an optical interface to a long-lived
spin state for distributed quantum information processing applications. An outstanding …

A future quantum network will consist of quantum processors that are connected by quantum
channels, just like conventional computers are wired up to form the Internet. In contrast to …

We propose how to achieve nonreciprocal quantum entanglement of light and motion and
reveal its counterintuitive robustness against random losses. We find that by splitting the …