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

The processing of information and computation is undergoing a paradigmatic shift since the
realization of the enormous potential of quantum features to perform these tasks. Coupled …

Security loopholes exploiting the flaws of practical apparatus, especially non-ideal photon
detectors, are pressing issues in practical quantum communication. We propose a simple …

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 …

We investigate the non-Markovian dynamics of two giant artificial atoms interacting with a
continuum of bosonic modes in a one-dimensional (1D) waveguide. Based on the …

The quantum router is an elementary building block in quantum information processing and
quantum communication. This work constitutes a step forward in this direction, ie, an efficient …

We investigate the interaction of laser pulses carrying orbital angular momentum (OAM) with
a symmetry-broken ladder-type quantum coupling scheme involving three internal states. A …

We study single-photon scattering via a giant Λ-type atom, where both atomic transitions are
coupled with the modes of a single waveguide at two separated points. The giant-atom …

We propose a single-photon router using a single atom with an inversion center coupled to
quantum multichannels made of coupled-resonator waveguides. We show that the …

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 …