$N$-photon bundles emission in high-spin Jaynes-Cummings model

TL;DR

This paper investigates high-spin Jaynes-Cummings models with spin-3/2 atoms, demonstrating enhanced multi-photon emission and resonance control, leading to advanced nonclassical light sources and optical switching applications.

Contribution

It introduces a high-spin JCM with tunable $n$-photon states, revealing enhanced spectral anharmonicity and new multi-photon emission regimes compared to traditional models.

Findings

Enhanced $n$-photon dressed state splittings via Zeeman shift tuning

Realization of high-quality $n$-photon bundles emission with large photon numbers

Switching among photon blockade, multi-photon emission, and tunneling regimes

Abstract

High-spin quantum systems, endowed with rich internal degrees of freedom, constitute a promising platform for manipulating high-quality $n$-photon states. In this study, we explore $n$-photon bundles emission by constructing a high-spin Jaynes-Cummings model (JCM) within a single-mode cavity interacting with a single spin-$3/2$ atom. Our analysis reveals that the $n$-photon dressed state splittings can be significantly enhanced by adjusting the linear Zeeman shift inherent to the internal degrees of freedom in high-spin systems, thereby yielding well-resolved $n$-photon resonance. The markedly enhanced energy-spectrum anharmonicity, stemming from strong nonlinearities, enables the realization of high-quality $n$-photon bundles emission with large steady-state photon numbers, in contrast to conventional spin-1/2 JCM setups. Of particular interest is the realization of an optical multimode transducer capable of transitioning among single-photon blockade, two- to four-photon bundles emission, and photon-induced tunneling by tuning the light-cavity detuning in the presence of both cavity and atomic pump fields. This work unveils significant opportunities for diverse applications in nonclassical all-optical switching and high-quality multiphoton sources, deepening our understanding of creating specialized nonclassical states and fundamental physics in high-spin atom-cavity systems.