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Chinese Physics, 2004, Vol. 13(2): 147-152    DOI: 10.1088/1009-1963/13/2/005
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Probabilistic remote state preparation by W states

Liu Jin-Ming (刘金明), Wang Yu-Zhu (王育竹)
Laboratory for Quantum Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
Abstract  In this paper we consider a scheme for probabilistic remote state preparation of a general qubit by using W states. The scheme consists of the sender, Alice, and two remote receivers Bob and Carol. Alice performs a projective measurement on her qubit in the basis spanned by the state she wants to prepare and its orthocomplement. This allows either Bob or Carol to reconstruct the state with finite success probability. It is shown that for some special ensembles of qubits, the remote state preparation scheme requires only two classical bits, unlike the case in the scheme of quantum teleportation where three classical bits are needed.
Keywords:  remote state preparation      W state      probabilistic      entanglement  
Received:  03 July 2003      Revised:  25 August 2003      Accepted manuscript online: 
PACS:  03.65.Ud (Entanglement and quantum nonlocality)  
  03.67.Mn (Entanglement measures, witnesses, and other characterizations)  
  02.50.Cw (Probability theory)  
Fund: Project supported by the China Postdoctoral Science Foundation, the National Natural Science Foundation of China (Grant Nos 10334050 and 10174086), the State Key Development Program for Basic Research of China (Grant No 2001CB309307), and the Knowledge In

Cite this article: 

Liu Jin-Ming (刘金明), Wang Yu-Zhu (王育竹) Probabilistic remote state preparation by W states 2004 Chinese Physics 13 147

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