Geometric Global Quantum Discord of Two-qubit States
Yunlong Xiao, Tao Li, Shao-Ming Fei, Naihuan Jing, Xianqing Li-Jost, and Zhi-Xi Wang
TL;DR
This paper introduces analytical formulas for calculating the geometric global quantum discord (GGQD) of two-qubit states, simplifying the process of quantifying quantum correlations in such systems.
Contribution
It provides a novel analytical approach to compute GGQD for arbitrary two-qubit states, including explicit formulas and examples.
Findings
Derived analytical formulas for GGQD of two-qubit states
Presented concrete examples demonstrating the formulas
Simplified the calculation process for quantum correlations
Abstract
We consider the geometric global quantum discord (GGQD) of two-qubit systems. By analyzing the symmetry of geometric global quantum discord we give an approach for deriving analytical formulae of the extremum problem which lies at the core of computing the GGQD for arbitrary two-qubit states. Furthermore, formulae of GGQD of arbitrary two-qubit states and some concrete examples are presented.
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