We demonstrate that voltage-controlled negative index can be obtained in self-organized InAs quantum dot systems. As the bias voltage changes, the refractive index can be adjusted and controlled continuously from -7 to 7. Simultaneously, the absorption of light in the system will be very small. The single-negative index materials and the double-negative index materials can be achieved in different bias voltages.
Cite
@article{arxiv.0811.0849,
title = {Voltage-Controlled Negative Index in Vertically Coupled Quantum Dot Systems},
author = {Huan Wang and Ka-Di Zhu},
journal= {arXiv preprint arXiv:0811.0849},
year = {2008}
}