Controlling wave function localization in a multiple quantum well structure

TL;DR

This paper investigates how wave functions in multiple quantum wells can be controlled to localize and hop between wells over time, influenced by barrier properties, with potential applications in quantum electron transport.

Contribution

It introduces a numerical study of wave function dynamics in quantum wells, highlighting how barrier parameters affect localization and tunneling behavior, which is a novel insight for quantum control.

Findings

Wave functions can be localized or hop between wells depending on barrier parameters.

Tunneling times are influenced by barrier height and width.

Potential applications in quantum electron transport are identified.

Abstract

The dynamics of a wave function describing a particle confined in a multiple quantum well potential is studied numerically. As a consequence of quantum mechanical tunneling, an initial wavefunction designed to be localized in one well can localize in the others after a certain time and hop between wells at times which depends on the height and width of the barriers separating the wells. This feature could find potential application in controlling electron transport in quantum well heterostructures