Entanglement detection using mutually unbiased measurements

TL;DR

This paper introduces a new entanglement detection method using mutually unbiased measurements, which is more effective than previous criteria and is experimentally feasible for high-dimensional bipartite systems.

Contribution

It proposes a novel entanglement detection criterion based on mutually unbiased measurements that outperforms previous criteria and is applicable to arbitrary dimensions.

Findings

The criterion is more effective than mutually unbiased bases-based criteria.

It becomes necessary and sufficient for isotropic states.

The method is experimentally implementable for arbitrary $d$-dimensional systems.

Abstract

We study the entanglement detection by using mutually unbiased measurements and provide a quantum separability criterion that can be experimentally implemented for arbitrary $d$-dimensional bipartite systems. We show that this criterion is more effective than the criterion based on mutually unbiased bases. For isotropic states our criterion becomes both necessary and sufficient.