Tunneling-induced coherent electron population transfer in an asymmetric quantum well

TL;DR

This paper proposes a method to achieve near-complete electron population transfer in an asymmetric double quantum well structure by exploiting resonant tunneling and interference effects, with potential applications in quantum control.

Contribution

It introduces a novel asymmetric quantum well design and demonstrates how resonant tunneling can be used to control electron transfer with high efficiency.

Findings

Near-complete electron transfer achieved through resonant tunneling

Adjustable quantum well parameters enable control of population transfer

Constructive interference enhances transfer efficiency

Abstract

We propose an asymmetric double quantum well structure with a common continuum and investigate the effect of resonant tunneling on the control of coherent electron population transfer between the two quantum wells. By numerically solving the motion equations of element moments, the almost complete electron population transfer from initial subband to the target subband could be realized due to the constructive interference via flexibly adjusting the structure parameters.