New High-Efficiency Source of a Three-Photon W State and its Full Characterization Using Quantum State Tomography

Hideharu Mikami, Yongmin Li, Kyosuke Fukuoka, and Takayoshi Kobayashi
Phys. Rev. Lett. 95, 150404 – Published 6 October 2005
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Abstract

We propose and demonstrate a new scheme of high-efficiency generation of the three-photon polarization-entangled W state, which is a typical three-qubit entangled state. The high efficiency has enabled the first full characterization of the state by quantum state tomography. We have analyzed the obtained state and observed its nature of tripartite entanglement and robustness of entanglement.

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  • Received 16 February 2005

DOI:https://doi.org/10.1103/PhysRevLett.95.150404

©2005 American Physical Society

Authors & Affiliations

Hideharu Mikami, Yongmin Li, Kyosuke Fukuoka, and Takayoshi Kobayashi

  • Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency (JST), Tokyo, Japan and Department of Physics, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan

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Vol. 95, Iss. 15 — 7 October 2005

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