Effect of flipping noise on the entanglement dynamics of a 3x3 system

TL;DR

This paper studies how different types of flipping noise affect the entanglement evolution in a 3x3 quantum system, revealing conditions that prevent entanglement sudden death and how noise can convert entangled states into bound or separable states.

Contribution

It provides a detailed analysis of entanglement dynamics under various flipping noise channels, highlighting the conditions that avoid entanglement loss and the effects of local operations.

Findings

Entanglement sudden death can be avoided with phase and trit flip noise.

Certain free entangled states become bound entangled or separable under noise.

Local operations do not influence entanglement dynamics.

Abstract

Entanglement dynamics of a qutrit-qutrit system under the influence of global, local and multilocal decoherence introduced by phase flip, trit flip and trit phase flip channels is investigated. The negativity and realignment criterion are used to quantify the entanglement of the system. It is shown that the entanglement sudden death and distibility sudden death can be avoided in the presence of phase flip, trit flip and trit-phase flip environments. It is shown that certain free entangled distillable qutrit states become bound entangled or separable i.e. convert into non-distillable states under different flipping noises. It is also seen that local operations do not have any effect on the entanglement dynamics of the system. Further more, no ESD and DSD is seen for the case of trit flip channel.