Entanglement and quantum Fisher information of two qutrits interacting with a single field in a cavity

Abstract

In this paper, we introduce a quantum model of a two-qutrit (TQ) system interacting with a deformed field mode, initially prepared in a nonlinear coherent state. We analyze the quantum dynamics of TQs in a Λ-type configuration, both with and without the time-dependent coupling (TDC) effect, within the framework of the Schrödinger equation. This will help us to investigate the time evolution of intriguing phenomena such as entanglement, quantum coherence, and the precision of parameter estimation in relation to the deformation parameter and TDC effect. Specifically, we consider the quantum dynamics of negativity, von Neumann entropy, the norm of coherence, and Fisher information. Finally, we explore the interrelationships among these quantum measures, providing insights into the underlying quantum phenomena of the system.