Topological pumping of photons in nonlinear resonator arrays

TL;DR

This paper demonstrates a method for achieving topological photon transport in nonlinear resonator arrays through periodic modulation, highlighting robustness and potential implementation in circuit QED systems.

Contribution

It introduces a novel approach to realize topological pumping of interacting photons using frequency modulation in nonlinear resonator arrays.

Findings

Robust transport of Fock states achieved

Topological properties confirmed through analysis

Feasible implementation in circuit QED architectures

Abstract

We show how to implement topological or Thouless pumping of interacting photons in one dimensional nonlinear resonator arrays, by simply modulating the frequency of the resonators periodically in space and time. The interplay between interactions and the adiabatic modulations enables robust transport of Fock states with few photons per site. We analyze the transport mechanism via an effective analytic model and study its topological properties and its protection to noise. We conclude by a detailed study of an implementation with existing circuit QED architectures.