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

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.

Enhancing entanglement, local and non-local information of accelerated two-qubit and two-qutrit systems via weak-reverse measurements

“…Fig. (1a), displays the behavior of entanglement of the final state (8), where it is assumed that, the partners share initially a singlet state i.e., c 11 = c 22 = c 33 = 1 and we have set α…”

“…al, [7]. The immunity and protecting the entanglement of accelerated qubit-qutrit system by using the local filtering technique is investigated by Metwally [8]. Recently, it has been shown that the local weak-reverse measurements,(WRM) can be used as a technique to protect and improve the correlation in qubit-qutrit systems [9].…”

A note on hidden quantum discord in two- and three-qubit systems under local filtering operations

“…In addition to revealing hidden quantum correlation properties, local filtering operations have other applications. In [20], Metwally discussed the possibility of immunization and improved the entanglement of accelerated systems via local filtering operations. Mayank et al showed the enhancement of a distillable key rate for quantum key distribution by local filtering for several bound entangled states [21].…”