Giant Emitters in a Structured Bath with Non-Hermitian Skin Effect
arXiv:2308.16148 · doi:10.1103/PhysRevResearch.5.L042040
Abstract
Giant emitters derive their name from nonlocal field-emitter interactions and feature diverse self-interference effects. Most of the existing works on giant emitters have considered Hermitian waveguides or photonic lattices. In this work, we unveil how giant emitters behave if they are coupled to a non-Hermitian bath, i.e., a Hatano-Nelson (HN) model which features a non-Hermitian skin effect due to the asymmetric inter-site tunneling rates. We show that the behaviors of the giant emitters are closely related to the stability of the bath. In the convectively unstable regime, where the HN model can be mapped to a pseudo-Hermitian lattice, a giant emitter can either behave as in a Hermitian bath or undergo excitation amplification, depending on the relative strength of different emitter-bath coupling paths. Based on this mechanism, we can realize protected nonreciprocal interactions between giant emitters, with nonreciprocity opposite to that of the bath. Such giant-emitter effects are not allowed, however, if the HN model enters the absolutely unstable regime, where the coupled emitters always show secular energy growth. Our proposal provides a new paradigm of non-Hermitian quantum optics, which may be useful for, e.g., engineering effective interactions between quantum emitters and performing many-body simulations in the non-Hermitian framework.
arXiv comment13 pages, 7 figures
References in corpus (61)
- Real Spectra in Non-Hermitian Hamiltonians Having PT Symmetry
- Making Sense of Non-Hermitian Hamiltonians
- Edge states and topological invariants of non-Hermitian systems
- Exceptional Topology of Non-Hermitian Systems
- Localization transitions in non-Hermitian quantum mechanics
- Topological phases of non-Hermitian systems
- The physics of exceptional points
- Symmetry and Topology in Non-Hermitian Physics
- Biorthogonal Bulk-Boundary Correspondence in Non-Hermitian Systems
- Topological Origin of Non-Hermitian Skin Effects
- Nonlinear waves in -symmetric systems
- Non-Bloch Band Theory of Non-Hermitian Systems
- Non-Hermitian Chern bands
- Non-Hermitian Boundary Modes
- Efficient Light Funneling based on the non-Hermitian Skin Effect
- Non-Hermitian robust edge states in one-dimension: Anomalous localization and eigenspace condensation at exceptional points
- Nonreciprocal Photon Transmission and Amplification via Reservoir Engineering
- Biorthogonal Quantum Mechanics
- Propagating phonons coupled to an artificial atom
- Quantum exceptional points of non-Hermitian Hamiltonians and Liouvillians: The effects of quantum jumps
- Non-Hermitian Topological Sensors
- Observation of Non-Hermitian Skin Effect and Topology in Ultracold Atoms
- Higher-order non-Hermitian skin effect
- Decoherence-free interaction between giant atoms in waveguide QED
- Waveguide Quantum Electrodynamics with Giant Superconducting Artificial Atoms
- Observation of arbitrary topological windings of a non-Hermitian band
- Hyperbolic Lattices in Circuit Quantum Electrodynamics
- Robust light transport in non-Hermitian photonic lattices
- Designing frequency-dependent relaxation rates and Lamb shift for a giant artificial atom
- Nonexponential decay of a giant artificial atom
- Non-Bloch band theory of non-Hermitian Hamiltonians in the symplectic class
- Tunable Chiral Bound States with Giant Atoms
- The giant acoustic atom -- a single quantum system with a deterministic time delay
- Topological framework for directional amplification in driven-dissipative cavity arrays
- Engineering the Level Structure of a Giant Artificial Atom in Waveguide Quantum Electrodynamics
- Single-photon scattering and bound states in an atom-waveguide system with two or multiple coupling points
- Non-Hermitian transparency and one-way transport in low-dimensional lattices by an imaginary gauge field
- Simple formulas of directional amplification from non-Bloch band theory
- Markovian and Non-Markovian Dynamics of Quantum Emitters coupled to Two-dimensional Structured Reservoirs
- Nonradiative interaction and entanglement between distant atoms
- Mechanism of decoherence-free coupling between giant atoms
- Quantum Emitters in Two-dimensional Structured Reservoirs in the Non-Perturbative Regime
- Engineering and harnessing giant atoms in high-dimensional baths: a cold atoms' implementation
- Nonreciprocal and chiral single-photon scattering for giant atoms
- Chiral Quantum Network with Giant Atoms
- Giant Atoms in a Synthetic Frequency Dimension
- Giant spin ensembles in waveguide magnonics
- Non-equilibrium stationary states of quantum non-Hermitian lattice models
- Photonic simulation of giant atom decay
- Circuit Quantum Electrodynamics in Hyperbolic Space: From Photon Bound States to Frustrated Spin Models
- Giant atoms with time-dependent couplings
- Complex decoherence-free interactions between giant atoms
- Interaction between giant atoms in a one-dimensional structured environment
- Non-Bloch bands in two-dimensional non-Hermitian systems
- Curving the space by non-Hermiticity
- Topological multi-mode waveguide QED
- Non-Bloch band theory and bulk-edge correspondence in non-Hermitian systems
- Anomalous Behaviors of Quantum Emitters in Non-Hermitian Baths
- Bound states and photon emission in non-Hermitian nanophotonics
- Quantum decay and amplification in a non-Hermitian unstable continuum
- Duality between Generalized Non-Hermitian HN Model in Flat Space and Hermitian System in Curved space
Cited by in corpus (16)
- Catch and release of propagating bosonic field with non-Markovian giant atom
- Avoiding decoherence with giant atoms in a two-dimensional structured environment
- Quantum optics with giant atoms in a structured photonic bath
- Single-photon scattering in giant-atom waveguide systems with chiral coupling
- Simulating open quantum systems with giant atoms
- Dressed Interference in Giant Superatoms: Entanglement Generation and Transfer
- Waveguide QED with dissipative light-matter couplings
- Chiral-Extended Photon-Emitter Dressed States in Non-Hermitian Topological Baths
- Phase Transitions and Virtual Exceptional Points in Quantum Emitters Coupled to Dissipative Baths
- Unconventional and robust light-matter interactions based on the non-Hermitian skin effect
- Topological, multi-mode amplification induced by non-reciprocal, long-range dissipative couplings
- Giant atom with disorders: Effects from imperfect couplings
- Scalable quantum simulator with an extended gate set in giant atoms
- Giant atoms coupled to waveguide: Continuous coupling and multiple excitations
- Exact dynamics and bound states of a cavity coupled to a two-dimensional reservoir
- Non-Markovian exceptional points in waveguide quantum electrodynamics