Quantum teleportation of a unknown N-qubit W-like state
Z.-X. Man, Y.-J. Xia, N. B. An+*
College of Physics and Engineering, Qufu Normal University, Qufu 273165, China
+Institute of Physics and Electronics, 10 Dao Tan, Thu Le, Ba Dinh, Hanoi, Vietnam
*School of Computational Sciences, Korea Institute for Advanced Study, 207-43 Cheongryangni 2-dong, Dongdaemun-gu, Seoul 130-722, Korea
PACS: 03.65.Ud, 03.67.-a, 03.67.Hk
Abstract
We propose a nontrivial protocol to teleport a
unknown N-qubit W-like state. The consumed resource is only
(N-1) shared ebits and 2(N-1) bits of classical communication,
while the technique involves only controlled-NOT gates and
single-qubit measurements/operations. The rule for reconstruction of
the desired state at the receiving station is worked out explicitly
in the most general case of an arbitrary
. The protocol is
within the reach of present technologies.