Conductivity measurements in JCH like models

TL;DR

This paper investigates how conductivity of excitations in short optical cavity chains with two-level atoms depends on various parameters, revealing complex behavior influenced by quantum bottlenecks and dephasing noise.

Contribution

It introduces a detailed analysis of conductivity in JCH-like models considering photon jumps and excitation transfer, highlighting the role of dephasing noise and quantum bottlenecks.

Findings

Conductivity shows non-trivial dependence on runoff and inflow intensities.

Dephasing noise can enhance transport efficiency (dephasing assisted transport).

Photon jumps and excitation transfer mechanisms significantly affect conductivity.

Abstract

We consider the conductivity of excitations in short chains of optical cavities with two-level atoms in the models of JCH type, where either we explicitly take into account the photon jumps between atoms, or is merely a transfer of excitation from atom to atom. We found a non-trivial dependence of the conductivity on the intensity of runoff and inflow (quantum bottleneck) in the presence of dephasing noise (the effect of dephasing assisted transport).