Tunable Single- and Multiphoton Bundles in Cavity-Coupled Atomic Arrays

TL;DR

This paper presents a practical scheme for generating tunable nonclassical light in cavity-coupled atomic arrays, enabling control over single- and multiphoton emissions through collective interference and atomic configuration.

Contribution

It introduces a novel, experimentally feasible method to switch between photon blockade and multiphoton bundle emission using atomic array interference control.

Findings

Demonstrates tunable transition from single-photon to multiphoton emission.

Reveals hierarchical photon correlation structures based on atom-number parity.

Connects cooperative atomic interactions with controllable photon statistics.

Abstract

We propose an experimentally accessible scheme for realizing tunable nonclassical light in cavity-coupled reconfigurable atomic arrays. By coherently controlling the collective interference phase, the system switches from single-photon blockade to high-purity multiphoton bundle emission, unveiling a hierarchical structure of photon correlations dictated by atom-number parity and cavity detuning. The scaling of photon population identifies the transition between superradiant and subradiant regimes, while parity- and phase-dependent spin correlations elucidate the microscopic interference processes enabling coherent multiphoton generation. This work establishes a unified framework connecting cooperative atomic interactions to controllable nonclassical photon statistics and introduces a distinct interference-enabled mechanism that provides a practical route toward high-fidelity multiphoton sources in scalable cavity QEDs.