Chiral and nonreciprocal single-photon scattering in a chiral-giant-molecule waveguide-QED system

Abstract

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, which interact with two linear waveguides, forming a four-port quantum device. We obtain the exact analytical expressions of the four scattering amplitudes using a real-space method. Under the Markovian limit, we find that the single-photon scattering behavior is determined by the coupling strength between the giant atoms and the waveguides, the coupling strength between the two giant atoms, and the nondipole effect caused by the phase accumulation of photons travelling between the coupling points. It is also found that chiral and nonreciprocal single-photon scattering can be realized by introducing the chiral coupling to break the symmetry in the coupling configuration between the giant molecule and the waveguides. In addition, an ideal chiral emitter-waveguide coupling enables a directional single-photon routing. In the non-Markovian regime, the scattering spectra are characterized by more abundant structures with multiple peaks and dips. In particular, we demonstrate that the non-Markovian retarded effect can induce the nonreciprocal single-photon scattering. Our results have potential applications in the design of optical quantum devices involving giant atoms, which can provide an efficient platform for studying chiral quantum optics.

13 pages,10 figures

References in corpus (18)

• Chiral Quantum Optics
• Microwave photonics with superconducting quantum circuits
• Chiral nanophotonic waveguide interface based on spin-orbit coupling of light
• Entanglement of two qubits mediated by one-dimensional plasmonic waveguides
• Controllable scattering of photons inside a one-dimensional resonator waveguide
• Nonreciprocal Photon Transmission and Amplification via Reservoir Engineering
• Propagating phonons coupled to an artificial atom
• Strongly Correlated Two-Photon Transport in One-Dimensional Waveguide Coupled to A Two-Level System
• All-Optical Routing of Single Photons by a One-Atom Switch Controlled by a Single Photon
• Persistent Quantum Beats and Long-Distance Entanglement from Waveguide-Mediated Interactions
• Designing frequency-dependent relaxation rates and Lamb shift for a giant artificial atom
• Quantum Spin Dimers from Chiral Dissipation in Cold-Atom Chains
• Non-reciprocal few-photon devices based on chiral waveguide-emitter couplings
• Nonreciprocal and chiral single-photon scattering for giant atoms
• Chiral Quantum Network with Giant Atoms
• Coherent single-photon scattering spectra for a giant-atom waveguide-QED system beyond dipole approximation
• Non-Markovian disentanglement dynamics in double-giant-atom waveguide-QED systems
• Giant atoms with time-dependent couplings

Cited by in corpus (14)

• Non-Markovian dynamics with a giant atom coupled to a semi-infinite photonic waveguide
• Avoiding decoherence with giant atoms in a two-dimensional structured environment
• Single-photon scattering in giant-atom waveguide systems with chiral coupling
• Single-photon scattering in giant-atom topological-waveguide-QED systems
• Non-Markovian dynamics with a driven three-level giant atom in a semi-infinite photonic waveguide
• Tunable photon-photon correlations in waveguide QED systems with giant atoms
• Harnessing spontaneous emission of correlated photon pairs from ladder-type giant atoms
• Multiterminal Nonreciprocal Routing in an Optomechanical Plaquette via Synthetic Magnetism
• Selective band interaction and long-range hopping in a structured environment with giant atoms
• Giant atoms coupled to waveguide: Continuous coupling and multiple excitations
• Dissipation-assisted few-photon optical diode
• Nonreciprocal routing induced by chirality in an atom-dimer waveguide-QED system
• Routing single photons with quantum emitters coupled to nanostructures
• Strongly coupled giant-atom waveguide quantum electrodynamics