Transport Enhancement of Irregular Optical Lattices with Polychromatic Amplitude Modulation

TL;DR

This paper presents a novel modulation technique to significantly enhance transport in deep optical lattices with irregular structures, achieving gains up to nearly a billion times in specific lattice configurations.

Contribution

It introduces a new polychromatic amplitude modulation scheme and effective models for strongly interacting particles to improve transport in irregular optical lattices.

Findings

Transport gains up to 9.8×10^8 predicted

Effective stationary models derived for strongly interacting limit

Modulation schemes enhance transport in irregular lattices

Abstract

We demonstrate that the transport characteristics of deep optical lattices with one or multiple off-resonant external energy offsets can be greatly-enhanced by modulating the lattice depth in an exotic way. We derive effective stationary models for our proposed modulation schemes in the strongly interacting limit, where only one particle can occupy any given site. Afterwards we discuss the modifications necessary to recover transport when more than one particle may occupy the lattice sites. For the specific five-site lattices discussed, we numerically predict transport gains for ranging from $4.7\times 10^6$ to $9.8\times 10^{8}$.