Photo control of transport properties in disorderd wire; average conductance, conductance statistics, and time-reversal symmetry

TL;DR

This paper investigates how light influences conductance in disordered one-dimensional wires, revealing control over average conductance and distribution shape through light parameters, with implications for optoelectronic device design.

Contribution

It develops a transfer matrix method for periodically driven systems to analyze conductance statistics, demonstrating control over conductance and symmetry via light parameters.

Findings

Conductance shows non-monotonic behavior with light amplitude.

Distribution shifts from log-normal to normal under light.

Light parameters enable giant opto-response in conductance.

Abstract

In this paper, we study the full conductance statistics of disordered one dimensional wire under the application of light. We develop the transfer matrix method for periodically driven systems to analyze the conductance of large system with small frequency of light, where coherent photon absorptions play important role to determine not only the average but also the shape of conductance distributions. The average conductance under the application of light results from the competition between dynamic localization and effective dimension increase, and shows non-monotonic behavior as a function of driving amplitude. On the other hand, the shape of conductance distribution displays crossover phenomena in the intermediate disorder strength; the application of light dramatically changes the distribution from log-normal to normal distributions. Furthermore, we propose that conductance of disordered systems can be controlled by engineering the shape, frequency and amplitude of light. Change of the shape of driving field controls the time-reversals symmetry and the disordered system shows analogous behavior as negative magneto-resistance known in static weak localization. A small change of frequency and amplitude of light leads to a large change of conductance, displaying giant-opto response. Our work advances the perspective to control the mean as well as the full conductance statistics by coherently driving disordered systems.