Entropy squeezing for a qubit with the Schr\"odinger cat states

TL;DR

This paper explores how entropy squeezing in a qubit interacting with Schr"odinger cat states is influenced by initial conditions and atomic coherence, revealing that squeezing is less affected by superposition features but depends on initial states and field intensity.

Contribution

It demonstrates that entropy squeezing is insensitive to superposition features of Schr"odinger cat states and highlights the importance of initial atomic coherence and field intensity.

Findings

Entropy squeezing occurs near the qubit's maximally coherent state.

Atomic coherence significantly enhances squeezing.

Squeezing depends on the initial field intensity.

Abstract

The manuscript investigates the entropy squeezing of a qubit (two-level atom) interacting with the cavity field in the Schr\"odinger cat states. The effects of the Schr\"odinger cat states of the field on the squeezing are examined. Our results suggest that entropy squeezing is not sensitive to the superposition features of two coherent states of the Schr\"odinger cat states. Furthermore, it is found that entropy squeezing occurs as the qubit initially close to its maximally coherent state, and the qubit initially in the maximally coherent state can generate optimal squeezing. This also demonstrates that the atomic coherence has a remarkable effect on the atomic squeezing. On the other hand, we also show how the entropy squeezing is related to the intensity of the initial field.