Abstract We present two schemes for realizing the remote preparation of a Greenberger--Horne--Zeilinger (GHZ) state. The first scheme is to remotely prepare a general N-particle GHZ state with two steps. One is to prepare a qubit state by using finite classical bits from sender to receiver via a two-particle entangled state, and the other is that the receiver introduces N - 1 additional particles and performs N - 1 controlled-not (C-Not) operations. The second scheme is to remotely prepare an N-atom GHZ state via a two-atom entangled state in cavity quantum electrodynamics (QED). The two schemes require only a two-particle entangled state used as a quantum channel, so we reduce the requirement for entanglement.
Received: 22 November 2005
Revised: 17 November 2006
Accepted manuscript online:
Fund: Project supported by the National Natural Science Foundation of China
(Grant No 10574022), and the Fund of the Natural Science of Fujian Province,
China (Grant No Z0512006).
Cite this article:
Lin Xiu(林秀), Li Hong-Cai(李洪才), Lin Xiu-Min (林秀敏), Li Xing-Hua(李兴华), and Yang Rong-Can(杨榕灿) Remote preparation of a Greenberger--Horne--Zeilinger state via a two-particle entangled state 2007 Chinese Physics 16 1209
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