Shot Noise for Entangled Electrons with Berry Phase

TL;DR

This paper investigates how Berry phase influences shot noise in entangled electrons within a beam-splitter setup, revealing oscillations between bunching and antibunching that can test Berry phase effects in electron transport.

Contribution

It introduces a novel experimental setup with adiabatically rotating magnetic fields to study Berry phase effects on shot noise in entangled electrons.

Findings

Shot noise oscillates between bunching and antibunching due to Berry phase.

The setup enables testing Berry phase effects via entanglement in electron transport.

The approach provides a new method for exploring quantum geometric phases.

Abstract

We study shot noise for entangled electrons in a 4-lead beam-splitter with one incoming lead driven by adiabatically rotating magnetic fields. We propose a setup of an adiabatically rotating magnetic field therefor, which is appropriate for an electron beam to transport through. Using the scattering matrix approach, we find that shot noise for the singlet and that for the entangled triplet oscillates between bunching and antibunching due to the influence of the Berry phase. It provides us a new approach for testing the Berry phase in electron transport on the basis of entanglement.