Observation of Antichiral Edge States in a Circuit Lattice

Abstract

We constructed an electrical circuit to realize a modified Haldane lattice exhibiting the unusual phenomenon of antichiral edge states. The circuit consists of a network of inductors and capacitors with interconnections reproducing the effects of a magnetic vector potential. The next nearest neighbor hoppings are configured differently from the standard Haldane model, and as predicted by earlier theoretical studies, this gives rise to antichiral edge states that propagate in the same direction on opposite edges and co-exist with bulk states at the same frequency. Using pickup coils to measure the voltage distributions in the circuit, we experimentally verify the key features of the modified Haldane lattice, including the group velocities of the antichiral edge states.

References in corpus (10)

• Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
• Topological Photonics
• Topological Acoustics
• Analogs of quantum Hall effect edge states in photonic crystals
• Topological properties of linear circuit lattices
• Quarter-Flux Hofstadter Lattice in Qubit-Compatible Microwave Cavity Array
• Topological Zak Phase in Strongly-Coupled LC Circuits
• Observation of symmetry protected zero modes in topolectrical circuits
• Anti-chiral edge states in an exciton polariton strip
• Antichiral states in twisted graphene multilayers

Cited by in corpus (21)

• Non-Hermitian skin clusters from strong interactions
• Antihelical Edge States in Two-dimensional Photonic Topological Metals
• One-dimensional $2^n$-root topological insulators and superconductors
• Non-Hermitian Chiral Skin Effect
• Zoology of non-Hermitian spectra and their graph topology
• $2^n$-root weak, Chern, and higher-order topological insulators, and $2^n$-root topological semimetals
• Experimental observation of non-Hermitian higher-order skin interface states in topological electric circuits
• Experimental realization of two-dimensional weak topological insulators
• Anti-chiral edge states and hinge states based on the Haldane model
• Observation of non-Hermitian antichiral edge currents
• Observation of type-III corner states induced by long-range interactions
• Engineering topological states and quantum-inspired information processing using classical circuits
• Bulk-edge correspondence in two-dimensional topological semimetals: A transfer matrix study of antichiral edge modes
• Spin-polarized antichiral exciton-polariton edge states
• Stacking-induced Chern insulator
• Experimental observation of edge-dependent quantum pseudospin Hall effect
• Anti-helical edge magnons in patterned antiferromagnetic thin film
• Valley Gapless Semiconductor: Models and Applications
• Magnetic doping-induced second-order and first-order topological phase transition inthe photonic alloy
• Electric circuit analog of Landau-Zener tunneling using time-varying elements
• Band engineering aided by topological edge state proximity effects: Inducing anti-chirality in graphene