Immunity, Improving and Retrieving the lost entanglement of accelerated qubit-qutrit system via local Filtering

TL;DR

This paper explores how local filtering can protect, enhance, and recover entanglement in an accelerated qubit-qutrit system, revealing conditions for long-lasting and increased entanglement depending on subsystem dimensions and filtering strength.

Contribution

It introduces a method using local filtering to immunize and improve entanglement in accelerated qubit-qutrit systems, highlighting the impact of subsystem dimensions and filter strength.

Findings

Long-lived entanglement achieved with small accelerated and large filtered subsystems.

Upper bounds of entanglement increase when larger subsystems are accelerated and filtered.

Entanglement always increases with filter strength of the large dimensional subsystem.

Abstract

The possibility of immunized and improving the entanglement of accelerated systems via local filtering is discussed. The maximum bounds of entanglement depend on the dimensions of the accelerated and the filtered subsystems. If the small dimensional subsystem is accelerated and the large dimensional subsystem is filtered, one can get a long-lived entanglement. Moreover, if the larger subsystem is accelerated, then by filtering any subsystem, the upper bounds of entanglement of the filtered state are larger then that for the initial states.For any accelerated subsystem, the entanglement always increases as the filter strength of the large dimensional subsystem increases.