Quantum discord in photon added Glauber coherent states of ${\rm GHZ}$-type

TL;DR

This paper studies how photon excitations affect quantum correlations, specifically quantum discord, in tripartite Glauber coherent states of GHZ type, and examines their monogamy properties.

Contribution

It introduces an analysis of photon excitation effects on quantum discord and monogamy in GHZ-type coherent states, a novel exploration in quantum correlation behavior.

Findings

Photon excitations influence quantum discord in tripartite states

Quantum discord exhibits monogamy properties depending on excitation strength

The study provides insights into quantum correlation distribution in coherent states

Abstract

We investigate the influence of photon excitations on quantum correlations in tripartite Glauber coherent states of Greenberger-Horne-Zeilinger type. The pairwise correlations are measured by means of the entropy-based quantum discord. We also analyze the monogamy property of quantum discord in this class of tripartite states in terms of the strength of Glauber coherent states and the photon excitation order.