Orbital entanglement and violation of Bell inequalities in the presence of dephasing

TL;DR

This paper investigates how dephasing impacts orbital entanglement and Bell inequality violations in mesoscopic conductors, providing insights into maintaining quantum correlations under realistic conditions.

Contribution

It analyzes the effect of dephasing on Bell inequality violations in orbital entanglement, extending previous work with a focus on system parameter optimization.

Findings

Dephasing reduces Bell inequality violation in mesoscopic conductors.

Optimal system parameters can mitigate dephasing effects.

The study provides guidelines for experimental detection of entanglement under realistic conditions.

Abstract

We discuss orbital entanglement in mesoscopic conductors, focusing on the effect of dephasing. The entanglement is detected via violation of a Bell Inequality formulated in terms of zero-frequency current correlations. Following closely the recent work by Samuelsson, Sukhorukov and Buttiker, we investigate how the dephasing affects the possibility to violate the Bell Inequality and how system parameters can be adjusted for optimal violation.