The Decay of Multiqudit Entanglement

TL;DR

This paper studies how entanglement in multi-qudit GHZ states diminishes over time under noise, analyzing the effects of system size and dimension on entanglement robustness.

Contribution

It provides a detailed analysis of entanglement decay in N-qudit GHZ states under noise, highlighting the influence of qudit dimension and particle number.

Findings

Entanglement decay time depends on qudit dimension d and number of particles N.

Higher dimension d generally enhances entanglement robustness.

The study identifies critical points where entanglement vanishes or becomes negligible.

Abstract

We investigate the decay of entanglement of a generalized N-qudit GHZ state, with each qudit passing through independently in a quantum noisy channel. By studying the time at which the entanglement completely vanishes and the time at which the entanglement becomes arbitrarily small, we try to find how the robustness of entanglement is influenced by dimension d and the number of particles N.