Influence of dephasing on shot noise in a Mach-Zehnder interferometer: Dephasing terminal model

TL;DR

This paper discusses potential limitations of the dephasing terminal model in accurately predicting shot noise in Mach-Zehnder interferometers, highlighting issues with exchange effects due to semiclassical approximations.

Contribution

It identifies possible problems in the dephasing terminal approach when applied to shot noise in interference setups, questioning its validity.

Findings

Eq. (7) captures current anticorrelations correctly.

The semiclassical nature may fail to describe exchange effects.

Potential inaccuracies in modeling dephasing effects.

Abstract

This paper has been retracted. The authors have discovered a possible problem in applications of the dephasing terminal approach to shot noise calculations in interference situations: Eq. (7) correctly re-introduces the anticorrelations between the currents in the two arms, but due to its semiclassical nature probably fails to describe the consequential diminishing of exchange effects at the second beamsplitter.