SCHEME FOR REMOTELY PREPARING THREE-PARTICLE GHZ-CLASS STATES

Gui-Xia Pan, Yi-Min Liu, Wen Zhang () and Zhan-Jun Zhang ()
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Gui-Xia Pan: School of Science, Anhui University of Science and Technology, Huainan 232001, China
Yi-Min Liu: Department of Physics, Shaoguan University, Shaoguan 512005, China
Wen Zhang: School of Physics and Material Science, Anhui University, Hefei 230039, China
Zhan-Jun Zhang: School of Physics and Material Science, Anhui University, Hefei 230039, China

International Journal of Modern Physics C (IJMPC), 2009, vol. 20, issue 04, 557-564

Abstract: A scheme is proposed for remotely preparing a class of three-particle GHZ states by using a Bell state and a three-qubit GHZ state as the quantum channel. In the scheme, a two-qubit collective state measurement is performed and the necessary classical communication cost is 0.25 cbit on average. In general, the target state can be successfully prepared with the probability 1/4. However, if the state belongs to some special classes, the preparation success probability can reach 0.5 or even 1 after consuming a little additional classical resource. Comparing with the recent scheme [Opt. Commun.281, 871 (2008)], the present scheme has some advantages, e.g., the simpler quantum joint measurement and the less classical resource consumption.

Keywords: Remote state preparation; GHZ state; two-qubit joint measurement; classical communication; local unitary operation; 03.67.Hk; 03.67.-a; 03.65.-w (search for similar items in EconPapers)
Date: 2009
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DOI: 10.1142/S0129183109013790

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