Quantum optics with giant atoms has provided a new paradigm to study photon scatterings.
In this work, we investigate the nontrivial single-photon scattering properties of giant atoms …

Optical nonreciprocity is an essential property for a wide range of applications, such as
building nonreciprocal optical devices that include isolators and circulators. The realization …

We study chiral and nonreciprocal single-photon scattering in a chiral-giant-molecule
waveguide-QED system. Here, the giant molecule consists of two coupled giant atoms …

Chiral quantum systems have received intensive attention in fundamental physics and
applications in quantum information processing including optical isolation and photon …

It is of fundamental interest in controlling the light–matter interaction for a long time in the
field of quantum information processing. Here, we explore a model by coupling a giant atom …

We demonstrate the possibility of designing efficient, nonreciprocal few-photon devices by
exploiting the chiral coupling between two waveguide modes and a single quantum emitter …

The photonic router is a key device in optical quantum networks. Conventional routers,
however, can only transfer a photon from the input port to the desired port probabilistically …

We propose a potentially practical scheme for the controllable single-photon transport via
waveguides which are coupled to a microcavity–emitter system. The microcavity–emitter …

The single-photon routing properties in the system composed of two waveguides and two
coupled cavities interacting with a two-level system are investigated theoretically. The …

The breaking of reciprocity is a topic of great interest in fundamental physics and optical
information processing applications. We demonstrate nonreciprocal light transport in a …