Two-particle interferometry in quantum Hall edge channels

In this article, we explore the recent advancements in two-particle interferometry applied to quantum Hall edge channels, drawing parallels to quantum optics while focusing on electronic systems. The objective is to characterize single-electron states through experimental methods developed from intensity–intensity correlation techniques, initially designed for optical systems to probe light coherence. Employing a time-dependent scattering formalism enables a thorough analysis of electronic transport phenomena at a microscopic scale. Our review encompasses both theoretical frameworks and experimental evidence, showcasing significant strides in manipulating single and few electrons in quantum conductors. These findings not only enhance our understanding of the quantum Hall effect but also promise future applications in quantum information processing and solid-state device optimization. The synthesis of these innovative approaches offers a comprehensive overview of the current research landscape, highlighting the interplay between fundamental physics concepts and potential technological developments in electron quantum optics. This article serves as a critical milestone in pushing the boundaries of mesoscopic physics and electron manipulation techniques.