Deterministic Remote Preparation of a Four-particle Entangled W State

Several schemes for deterministic remote preparation of four-qubit W state by using four Einstein-Podolsky-Rosen (EPR) pairs and two four-qubit GHZ entangled states as quantum channels were proposed. To complete the schemes, four-qubit projective measurement and two-qubit projective measurement are needed respectively. Compared with the previous schemes which the total probability of successful RSP is 14\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$\frac {1}{4}$\end{document}, it is shown that the total successful probability in our schemes can reach 1.