Violation of Leggett-Garg inequalities in single quantum dot

TL;DR

This paper explores how quantum dots violate Leggett-Garg inequalities under various conditions, identifying a more testable inequality and analyzing factors affecting violation such as noise and temperature.

Contribution

It introduces a more experimentally accessible LG inequality for quantum dots and examines how physical parameters influence violation.

Findings

Identified a more testable LG inequality for quantum dots.

Showed that noise and temperature affect LG inequality violation.

Demonstrated the impact of fine-structure splitting on violations.

Abstract

We investigate the violation of Leggett-Garg (LG) inequalities inquantum dots with the stationarity assumption. By comparing two types of LG inequalities, we find a better one which is easier to be tested in experiment. In addition, we show that the fine-structure splitting, background noise and temperature of quantum dots all influence the violation of LG inequalities.