Entanglement recovery by weak measurement reversal in tripartite systems

Entanglement protection from noisy environments is an essential task in practical quantum information and communication. In this paper, we investigate the entanglement recovery of an amplitude-damped tripartite GHZ state by a weak-measurement reversal procedure. In particular, we emphasize the key importance of the inequivalency of probability amplitudes of the tripartite system under the recovery technique. We explore the maximal and non-maximal tripartite entangled state scenarios under amplitude damping noise in the absence and presence of weak measurement reversal procedures. Importantly, the non-maximal entangled state turns out to be a good choice for the entanglement recovery via weak-measurement reversal procedure.

Automated summary

This paper investigates the entanglement recovery of an amplitude-damped tripartite GHZ state using weak-measurement reversal procedure. The key importance of the inequivalency of probability amplitudes of the tripartite system under the recovery technique is emphasized. The non-maximal entangled state is found to be a good choice for entanglement recovery via weak-measurement reversal procedure in the presence of amplitude damping noise.