Bandgap-assisted quantum control of topological edge states in a cavity
Wei Nie, Yu-xi Liu
Abstract
In this work, the authors study interactions between light and topological quantum matter, by exploring strong nonlinearity due to topological bandgap. Based on parity properties of edge states and bulk states in a topological qubit array, a cavity spectroscopy method is proposed in circuit QED system, where qubit-qubit and qubit-cavity couplings are tunable, to detect topological phase transition and Rabi splittings of edge states. The bandgap-enabled coupling between edge states provides a way for quantum control in topological systems
Topics & Concepts
PhysicsQubitTopology (electrical circuits)Topological orderTopological degeneracyTopological entropy in physicsSymmetry protected topological orderQuantum mechanicsParity (physics)QuantumCoupling (piping)Quantum phase transitionQuantum controlQuantum phasesTopological quantum numberPhase (matter)Enhanced Data Rates for GSM EvolutionPhase transitionPhase qubitQuantum stateRabi cycleTheoretical physicsSpectral lineCavity quantum electrodynamicsCondensed matter physicsSpectrum (functional analysis)SpectroscopyTopological Materials and PhenomenaQuantum Information and CryptographyCold Atom Physics and Bose-Einstein Condensates