Quantum Discord and Entanglement in Quasi-Werner States Based on Bipartite Superposed Coherent States

TL;DR

This paper investigates quantum discord and entanglement in generalized bipartite superposed coherent states, introducing quasi-Werner states and comparing their quantum correlations.

Contribution

It extends previous work by analyzing more general bipartite superposed coherent states and deriving quasi-Werner states for detailed quantum correlation study.

Findings

Quantum discord and entanglement of formation are computed for the new states.

Comparison shows differences in quantum correlations between the states.

Results highlight the impact of state generalization on quantum correlations.

Abstract

Recently, the authors [arXiv quant-ph 1209.3706] studied quantum discord for Werner mixed states based on the four entangled coherent states, which are used for quantum teleportation of single qubit information encoded in superposed coherent state and compared it with entanglement of formation. In the present paper, we consider two more general bipartite superposed coherent states and get two quasi-Werner states. We study quantum discord and entanglement of formation for these states and compare them.