Shot noise of photon-excited electron-hole pairs in open quantum dots

TL;DR

This paper studies the shot noise generated by photon-excited electron-hole pairs in open quantum dots, analyzing how Coulomb interactions, inelastic scattering, and dephasing influence noise correlations.

Contribution

It provides a self-consistent, gauge-invariant framework for understanding shot noise in quantum dots, including effects of Coulomb interactions and inelastic processes.

Findings

Coulomb interactions reduce shot noise

Dephasing does not affect noise

Inelastic scattering suppresses correlations to zero

Abstract

We investigate shot noise of photon-excited electron-hole pairs in open multi-terminal, multi-channel chaotic dots. Coulomb interactions in the dot are treated self-consistently giving a gauge-invariant expression for the finite frequency correlations. The Coulomb interactions decrease the noise, the strong interaction limit coincides with the non-interacting adiabatic limit. Inelastic scattering and dephasing in the dot are described by voltage and dephasing probe models respectively. We find that dephasing leaves the noise invariant, but inelastic scattering decreases correlations eventually down to zero.