Factorization Law for Two Lower Bounds of Concurrence

TL;DR

This paper investigates how two lower bounds of quantum concurrence evolve in bipartite systems under local channels, revealing a factorization law that simplifies understanding their dynamics and applications.

Contribution

It establishes a factorization law for two lower bounds of concurrence under local channels, extending previous results and providing a new tool for quantum entanglement analysis.

Findings

Lower bounds obey a factorization law under local channels

The law simplifies entanglement dynamics analysis

Application example demonstrates practical relevance

Abstract

We study the dynamics of two lower bounds of concurrence in bipartite quantum systems when one party goes through an arbitrary channel. We show that these lower bounds obey the factorization law similar to that of [Konrad et al., Nat. Phys. 4, 99 (2008)]. We also, discuss the application of this property, in an example.