Quantum filtering of accelerated qubit–qutrit system

Abstract

The possibility of immunizing 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 than that depicted for then non-filtered states. For any accelerated subsystem, the entanglement always increases as the filter strength of the large dimensional subsystem increases.