Unconventional Quantum Electrodynamics with Hofstadter-Ladder Waveguide

Abstract

We propose a novel quantum electrodynamics (QED) platform where quantum emitters interact with a Hofstadter-ladder waveguide. We demonstrate several intriguing phenomena stemming from the exotic dispersion relation and vacuum mode properties led by the effective spin-orbit coupling, which have no analog in other QED setups. First, by assuming emitter's frequency to be resonant with the lower band, we find that the spontaneous emission is chiral with most photonic field decaying unidirectionally. Both numerical and analytical results indicate that the Hofstadter-ladder waveguide can be engineered as a well-performed chiral quantum bus. Second, the dynamics of emitters of giant atom form is explored by considering their frequencies below the lower band. Due to quantum interference, we find that both the emitter-waveguide interaction and the amplitudes of bound states are periodically modulated by giant emitter's size. The periodical length depends on the positions of energy minima points induced by the spin-orbit coupling. Last, we consider the interaction between two giant emitters mediated by bound states, and find that their dipole-dipole interaction vanishes (is enhanced) when maximum destructive (constructive) interference happens.

arXiv comment13 pages; 8 figures

References in corpus (72)

• Quantum Spin Hall Effect in Graphene
• Topological Photonics
• QuTiP 2: A Python framework for the dynamics of open quantum systems
• Spin-orbit interactions of light
• Universal Intrinsic Spin-Hall Effect
• QuTiP: An open-source Python framework for the dynamics of open quantum systems
• Introduction to Quantum Noise, Measurement and Amplification
• Dissipationless Quantum Spin Current at Room Temperature
• Spin Torque Ferromagnetic Resonance Induced by the Spin Hall Effect
• Chiral Quantum Optics
• Robust optical delay lines via topological protection
• Experimental observation of the spin-Hall effect in a two dimensional spin-orbit coupled semiconductor system
• Interfacing single photons and single quantum dots with photonic nanostructures
• Microwave photonics with superconducting quantum circuits
• Spin-orbit coupling in quantum gases
• Transverse and longitudinal angular momenta of light
• Chiral nanophotonic waveguide interface based on spin-orbit coupling of light
• Realization of Two-Dimensional Spin-orbit Coupling for Bose-Einstein Condensates
• Quantum many-body models with cold atoms coupled to photonic crystals
• Observation of the Meissner effect with ultracold atoms in bosonic ladders
• Atom-Light Interactions in Photonic Crystals
• Effective Hamiltonian Theory and Its Applications in Quantum Information
• Decoherence-free interaction between giant atoms in waveguide QED
• Subwavelength vacuum lattices and atom-atom interactions in photonic crystals
• Waveguide Quantum Electrodynamics with Giant Superconducting Artificial Atoms
• Synthetic dimensions and spin-orbit coupling with an optical clock transition
• Microscopy of the interacting Harper-Hofstadter model in the few-body limit
• Topologically Robust Transport of Photons in a Synthetic Gauge Field
• Designing frequency-dependent relaxation rates and Lamb shift for a giant artificial atom
• Quantum electrodynamics near a photonic band-gap
• Unconventional quantum optics in topological waveguide QED
• Engineering spin-orbit coupling for photons and polaritons in microstructures
• Atom-field dressed states in slow-light waveguide QED
• Low-Disorder Microwave Cavity Lattices for Quantum Simulation with Photons
• Tunable Chiral Bound States with Giant Atoms
• The giant acoustic atom -- a single quantum system with a deterministic time delay
• Quantum electrodynamics in a topological waveguide
• Tailoring quantum gases by Floquet engineering
• Chiral Ladders and the Edges of Chern Insulators
• Oscillating bound states for a giant atom
• Single-photon scattering and bound states in an atom-waveguide system with two or multiple coupling points
• Unconventional states of bosons with synthetic spin-orbit coupling
• Non-Markovian Dynamics in Chiral Quantum Networks with Spins and Photons
• Markovian and Non-Markovian Dynamics of Quantum Emitters coupled to Two-dimensional Structured Reservoirs
• Nonradiative interaction and entanglement between distant 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
• Chiral Quantum Network with Giant Atoms
• Aspects of Chiral Symmetry and the Lattice
• Vacancy-like dressed states in topological waveguide QED
• Purely Long-Range Coherent Interactions in Two-Dimensional Structured Baths
• Light-matter interactions in synthetic magnetic fields: Landau-photon polaritons
• Pair-Density-Wave Superconducting Order in Two-Leg Ladders
• Giant atoms with time-dependent couplings
• Quantum optics with giant atoms -- the first five years
• Programmable directional emitter and receiver of itinerant microwave photons in a waveguide
• Exotic interactions mediated by a non-Hermitian photonic bath
• Unconventional quantum sound-matter interactions in spin-optomechanical-crystal hybrid systems
• Photon molecules in atomic gases trapped near photonic crystal waveguides
• Chiral quantum optics in photonic sawtooth lattices
• Fractional charge excitations in fermionic ladders
• Charge-Noise Insensitive Chiral Photonic Interface for Waveguide Circuit QED
• Quantum acousto-optic control of light-matter interactions in nanophotonic networks
• Dynamics of Matter-Wave Quantum Emitters in a Structured Vacuum
• Extended range of dipole-dipole interactions in periodically structured photonic media
• Perfect Chirality with imperfect polarisation
• Spin-orbit coupling in a hexagonal ring of pendula
• Synthetic gauge field and chiral physics on two-leg superconducting circuits
• Bound States in the Continuum in Spin-Orbit Coupled Atomic Systems
• Generating Synthetic Magnetism via Floquet Engineering Auxiliary Qubits in Phonon-Cavity-Based Lattice
• A reservoir for inverse power law decoherence of a qubit
• Dissimilar collective decay and directional emission from two quantum emitters

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• Circuit QED with a Giant Atom Coupling to Left-handed Superlattice Metamaterials
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• Light-Matter interactions in Hofstadter lattice with the next-nearest neighbor couplings
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