A Peculiar Tripartite Entangled State

Authors: Yan-Xia H.¹; Ya-Fei Y.²; Ming-Sheng Z.²

Source: Chinese Physics Letters, Volume 20, Number 9, 2003 , pp. 1423-1425(3)

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Abstract:

We present a scheme to prepare two-atom Einstein-Podolsky-Rosen states and three-atom entangled states via cavity quantum electrodynamics, and it can be realized experimentally. Importantly, we find that in the set of tripartite entangled states prepared by our scheme there is a peculiar tripartite entangled state except the Greenberger-Horne-Zeilinger (GHZ) state. The peculiar tripartite entangled states have double feature of the GHZ state (i.e. ₁₂₃>0) and W state (i.e. the remaining reduce density matrices _ij retain entanglement according to the positive partial transformation (PPT) criterion) simultaneously. However, its entanglement properties are not completely identical either to the GHZ state or to the W state. It is interesting that for peculiar entanglement properties, the remaining reduced density matrices _ij can retain entanglement or disentanglement independently, which can be chosen freely according to our need.

Language: English

Document Type: Miscellaneous

Affiliations: 1: Department of Physics, Hubei Normal University, Huangshi 435002 2: State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071

Publication date: 2003-01-01