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VOLUME 85 (2007) | ISSUE 12 | PAGE 799
Quantum teleportation of a unknown N-qubit W-like state
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 N\ge 3. The protocol is within the reach of present technologies.