Tunable chiral bound states with giant atoms

X Wang, T Liu, AF Kockum, HR Li, F Nori - Physical Review Letters, 2021 - APS
We propose tunable chiral bound states in a system composed of superconducting giant
atoms and a Josephson photonic-crystal waveguide (PCW), with no analog in other …

Nonreciprocal and chiral single-photon scattering for giant atoms

YT Chen, L Du, L Guo, Z Wang, Y Zhang, Y Li… - Communications …, 2022 - nature.com
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 …

Chiral quantum optics with giant atoms

A Soro, AF Kockum - Physical Review A, 2022 - APS
In quantum optics, it is common to assume that atoms are pointlike objects compared to the
wavelength of the electromagnetic field they interact with. However, this dipole …

Vacancy-like dressed states in topological waveguide QED

L Leonforte, A Carollo, F Ciccarello - Physical Review Letters, 2021 - APS
We identify a class of dressed atom-photon states forming at the same energy of the atom at
any coupling strength. As a hallmark, their photonic component is an eigenstate of the bare …

Nonreciprocal frequency conversion with chiral -type atoms

L Du, YT Chen, Y Li - Physical Review Research, 2021 - APS
In this paper, we begin with a model of a Λ-type atom whose both transitions are chirally
coupled to a wave guide and then extend the model to its giant-atom version. We investigate …

Unconventional quantum sound-matter interactions in spin-optomechanical-crystal hybrid systems

XL Dong, PB Li, T Liu, F Nori - Physical Review Letters, 2021 - APS
We predict a set of unusual quantum acoustic phenomena resulting from sound-matter
interactions in a fully tunable solid-state platform in which an array of solid-state spins in …

Exotic interactions mediated by a non-Hermitian photonic bath

F Roccati, S Lorenzo, G Calajò, GM Palma, A Carollo… - Optica, 2022 - opg.optica.org
Photon-mediated interaction between quantum emitters in engineered photonic baths is an
emerging area of quantum optics. At the same time, non-Hermitian (NH) physics is currently …

Unconventional quantum electrodynamics with a Hofstadter-ladder waveguide

X Wang, ZM Gao, JQ Li, HB Zhu, HR Li - Physical Review A, 2022 - APS
We propose a quantum electrodynamics platform where quantum emitters interact with a
Hofstadter-ladder waveguide. We demonstrate several intriguing phenomena stemming …

Decay dynamics of a giant atom in a structured bath with broken time-reversal symmetry

L Du, YT Chen, Y Zhang, Y Li… - Quantum Science and …, 2023 - iopscience.iop.org
We study in this paper the decay dynamics of a two-level giant atom, which is coupled to a
quasi-one-dimensional sawtooth lattice exposed to uniform synthetic magnetic fluxes. In the …

Chiral cavity-magnonic system for the unidirectional emission of a tunable squeezed microwave field

J Xie, S Ma, Y Ren, S Gao, F Li - Physical Review A, 2023 - APS
Unidirectional photon emission is crucial for constructing quantum networks and realizing
scalable quantum information processing. In the present work an efficient scheme is …