Quantum Interferometry with Electrons: Outstanding Challenges

TL;DR

This paper reviews the current state of quantum interferometry with electrons, discussing experimental results, theoretical models, and unresolved challenges in understanding electron phase information from transport measurements.

Contribution

It provides a comprehensive overview of recent experimental and theoretical advances in electron interferometry, highlighting unresolved issues and future directions.

Findings

Experimental evidence of electron phase from transport measurements

Theoretical models addressing electron interference phenomena

Identification of key challenges in interpreting interferometry data

Abstract

Recent experiments involving semiconducting quantum dots embedded in Aharonov-Bohm interferometry setups suggest that information concerning the phase of electron wavefunctions can be obtained from transport measurements. Here we review the basics of the theory of electron interferometry, some of the relevant experimental results, and recent theoretical developments attempting to shed light on the outstanding dilemmas.