Change-over switch for quantum states transfer with topological channels in a circuit-QED lattice

We propose schemes to realize robust quantum states transfer between distant resonators using the topological edge states of a one-dimensional circuit quantum electrodynamics (QED) lattice. Analyses show that the distribution of edge states can be regulated accordingly with the on-site defects added on the resonators. And we can achieve different types of quantum state transfer without adjusting the number of lattices. Numerical simulations demonstrate that the on-site defects can be used as a change-over switch for high-fidelity single-qubit and two-qubit quantum states transfer. This work provides a viable prospect for flexible quantum state transfer in solid-state topological quantum system.

Automated summary

This paper proposes schemes to achieve robust quantum state transfer between distant resonators using the topological edge states of a one-dimensional circuit QED lattice. By adding on-site defects on the resonators, the distribution of edge states can be regulated accordingly, and different types of quantum state transfer can be achieved without adjusting the number of lattices.