Dynamics of entanglement for a two-parameter class of states in a qubit-qutrit system

TL;DR

This paper studies how entanglement evolves in a hybrid qubit-qutrit system under noise, revealing that entanglement sudden death is common and depends on initial states and noise types.

Contribution

It provides a detailed analysis of entanglement dynamics in a two-parameter class of qubit-qutrit states under various dissipative channels, highlighting conditions for avoiding entanglement sudden death.

Findings

Entanglement sudden death occurs frequently under different noisy channels.

Some initial states can avoid entanglement sudden death with specific noise conditions.

Environment influences entanglement and coherence differently.

Abstract

We investigate the dynamics of entanglement for a two-parameter class of states in a hybrid qubit-qutrit system under the influence of various dissipative channels. Our results show that entanglement sudden death (ESD) is a general phenomenon and it usually takes place in a qubit-qutrit system interacting with various noisy channels, not only the case with dephasing and depolarizing channels observed by others. ESD can only be avoided for some initially entangled states under some particular noisy channels. Moreover, the environment affects the entanglement and the coherence of the system in very different ways.