Entangling power for Anti-Jaynes–Cummings Model

Abstract

The capability of the Anti-Jaynes–Cummings model (AJCM) to generate quantum correlations between finite- and infinite-dimensional subsystems has been investigated. This concept is demonstrated by considering an atom with varying dimensionalities interacting with a cavity mode prepared in different initial states. The findings show that the entangling power of the AJCM, and consequently the generated entanglement, can be maximized when a cavity mode prepared in coherent or squeezed vacuum states interacts locally with a three- or four-dimensional atom. Additionally, increasing the mean photon number inside the cavity enhances both the entangling power and the degree of entanglement between the subsystems. A harmonious relationship is observed between the entangling power and the entanglement measure, with sudden, gradual, and constant behaviors predicted at the same interaction time.