Title: Multiparty-controlled teleportation with generalised GHZ states in quantum communication network

Authors: Xiaoqing Tan; Lianxia Jiang; Junpeng Hu

Addresses: Department of Mathematics, Jinan University, Guangzhou 510632, China ' Department of Mathematics, Jinan University, Guangzhou 510632, China ' Guangzhou Shiyuan Electronics Co., Ltd., Guangzhou Science Park, Guangzhou 510663, China

Abstract: A multiparty-controlled teleportation (M-CT) scheme for securely teleporting an arbitrary unknown single-qubit state by using generalised Greenberger-Horne-Zeilinger (GHZ) states is presented in this paper, i.e., a sender, Alice, transmits an arbitrary single-qubit state to a distant receiver, Bob, under approving by all N controllers Charliei(i = 1, 2, ..., N) in a quantum communication network. It is proved feasibly and easily to realise by quantum entanglement. The security of proposed scheme is also discussed. We make sure of the security of the quantum channel between the parties by decoy states. This scheme also can be used to share a quantum secret information in quantum secret sharing.

Keywords: multiparty control; teleportation; M-CT; generalised GHZ states; entanglement swapping; quantum communication networks; QCN; quantum networks; network security; decoy states; quantum secret sharing.

DOI: 10.1504/IJCNDS.2014.064635

International Journal of Communication Networks and Distributed Systems, 2014 Vol.13 No.3/4, pp.344 - 353

Received: 31 Jul 2013
Accepted: 18 Apr 2014
Published online: 13 Sep 2014 *

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