Entanglement swapping of a GHZ state via a GHZ-like state
Chia‐Wei Tsai, Tzonelih Hwang · Physica Scripta · 2011
This study uses the Greenberger–Horne–Zeilinger (GHZ)-like state to establish an entanglement swapping protocol on a pure GHZ state. A quantum circuit is proposed to assist in teleporting the entanglement of the pure GHZ state. Furthermore, on the basis of the generation of the GHZ-like state, an improved protocol to reduce the number of transmitted photons required in the process of entanglement swapping is proposed.