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Chinese Physics Letters

Scheme for Concentration of Unknown Greeberger–Horne–Zeilinger Entangled States via Cavity Decay

Xiaowei Zhang, Xiang Liu, Tang Xiao-Fang, Tang You-Liang

Published Feb 19, 2007• 1 citation
Publisher

Abstract

We present a scheme for entanglement concentration of an unknown atomic non-maximally entangled GHZ state via cavity decay. In the scheme, the atom trapped in a cavity is manipulated by laser field, so the maximally entangled GHZ state can be obtained by performing certain operation, which can be realized by illuminating the atom in a cavity. Our method is robust against spontaneous atomic decay.

DOI
10.1088/0256-307x/24/3/005

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