Atomic non-classicality: A study of the anti-Jaynes-Cummings interaction

TL;DR

This study explores how the Wigner-Yanase skew information quantifies atomic non-classicality during the anti-Jaynes-Cummings interaction, revealing its dependence on squeezing, field intensity, and coupling strength.

Contribution

It introduces the use of Wigner-Yanase skew information to analyze atomic non-classicality in AJC dynamics under various experimental parameters.

Findings

Skew information indicates non-classicality persists across parameter variations.

Time evolution shows mixed state characteristics consistent with squeezing effects.

The dynamics are sensitive to squeeze parameter, field intensity, and coupling strength.

Abstract

We apply the Wigner-Yanase skew information, as a quantum information quantifier of atomic non-classicality in the dynamics generated by the anti-Jaynes-Cummings (AJC) Hamiltonian when a two-level atom in an initial atomic ground state, couples to a single mode of squeezed coherent light. We investigate the effect of variation of squeeze parameter, field intensity, and coupling strength parameter, on the dynamics of the Wigner-Yanase skew information. We observe that time-evolution of the Wigner-Yanase skew information records mixed state values for all variations of squeeze parameter, field intensity and coupling strength parameter, congruent with squeezing effects.