Shot noise spectrum of superradiant entangled excitons

TL;DR

This paper theoretically investigates the shot noise spectrum in a double quantum dot system, revealing how superradiance-induced entanglement enhances noise and how measurements can destroy this entanglement.

Contribution

It introduces a theoretical analysis of shot noise in entangled excitons within a double dot system, highlighting superradiance effects and measurement impacts.

Findings

Superradiance enhances shot noise in the system.

Entanglement is fragile under Zeno-like measurements.

Maximum entanglement persists despite measurements.

Abstract

The shot noise produced by tunneling of electrons and holes into a double dot system incorporated inside a p-i-n junction is investigated theoretically. The enhancement of the shot noise is shown to originate from the entangled electron-hole pair created by superradiance. The analogy to the superconducting cooper pair box is pointed out. A series of Zeno-like measurements is shown to destroy the entanglement, except for the case of maximum entanglement.