Symmetric multiparty-controlled teleportation of an arbitrary two-particle entanglement

Details Symmetric multiparty-controlled teleportation of an arbitrary two-particle entanglement Symmetric multiparty-controlled teleportation of an arbitrary two-particle entanglement

2005-01-23

arxiv.org/abs/quant-ph/0501129v3

Physical Review A 72, 022338 (2005)

Physics

Quantum Physics

9 pages, 3 figures; the revised version published in Physical Review A 72, 022338 (2005). The detail for setting up a GHZ-stat

Scientific paper

10.1103/PhysRevA.72.022338

We present a way for symmetric multiparty-controlled teleportation of an arbitrary two-particle entangled state based on Bell-basis measurements by using two Greenberger-Horne-Zeilinger states, i.e., a sender transmits an arbitrary two-particle entangled state to a distant receiver, an arbitrary one of the $n+1$ agents via the control of the others in a network. It will be shown that the outcomes in the cases that $n$ is odd or it is even are different in principle as the receiver has to perform a controlled-not operation on his particles for reconstructing the original arbitrary entangled state in addition to some local unitary operations in the former. Also we discuss the applications of this controlled teleporation for quantum secret sharing of classical and quantum information. As all the instances can be used to carry useful information, its efficiency for qubits approaches the maximal value.

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