Controlled teleportation of an arbitrary n-qubit quantum information using quantum secret sharing of classical message

摘要

I present a scheme which allows an arbitrary 2-qubit quantum state teleportation between two remote parties with control of many agents in a network. Comparisons between the present scheme and the existing scheme proposed recently [F.G. Deng, et al., Phys. Rev. A 72 (2005) 0223381 are made. It seems that the present scheme is much simpler and more economic. Then I generalize the scheme to teleport an arbitrary n-qubit quantum state between two remote parties with control of agents in a network. (c) 2005 Elsevier B.V. All rights reserved.