Geometric Antibunching and Directional Shaping of Photon Anticorrelations

TL;DR

This paper introduces geometric antibunching, a new mechanism for photon anticorrelation arising from quantum interference, independent of emitter quantum states, and explores its directional properties near various nanostructures.

Contribution

It presents the concept of geometric antibunching, a novel photon anticorrelation mechanism based on interference, and analyzes its directional characteristics in different nanostructured environments.

Findings

Geometric antibunching is independent of emitter quantum states.

Photon anticorrelation can be controlled via geometric and material parameters.

Directional photon statistics are influenced by nanostructure proximity.

Abstract

We investigate the directional characteristics of photon statistics in dimers of quantum emitters. For their analysis, we construct a two-point second-order correlation function that allows us to find a new mechanism for photon anticorrelation, termed as geometric antibunching. This phenomenon is completely agnostic to the quantum state of the emitters and emerges from quantum interference effects due to the indistinguishability of different two-photon optical pathways. Finally, we explore its occurrence in emitters placed in the vicinity of a flat substrate and a nanosphere, demonstrating its tunnability through the different material and geometric parameters of these structures.