Teleportation of two-quNit entanglement: Exploiting local resources

Jie Yang, Hao Yuan, Zhanjun Zhang

This paper includes two comments. The first one is a comment on 'Teleportation of two quNit entanglement: Exploiting local resources'. Two different efficient methods are presented to modify some details of N. Ba An's protocol, so that teleportation of two quNit entanglement can be successfully achieved in terms of the revised N. Ba An's protocol. The second one is a comment on 'Reply to Yang et al.'s comment'.

F.J. Duarte

Nguyen Ba An

We propose a protocol to teleport a type of unknown M-quNit entanglement using a single maximally entangled quNit pair as a quantum channel. The faithful teleportation is possible at the expense of consuming local resources together with additional bi-quNit operations at the receiving site. Although the full set of measurement outcomes at the sending site consists of M + 1 Nits, the classical data necessary to rebuild the original teleported state at the receiving site can be managed so that a message of only two Nits suffices. The proposed protocol is economical in the sense that the cost of both quantum nonlocal resource and classical communication is minimal and does not depend on M.

F. J. Duarte

Nguyen Ba An

This is to reply to a recent comment by Yang, Yuan and Zhang on ``Teleportation of two-quNit entanglement: Exploiting local resorces''.

Akira Furusawa, Peter van Loock