Multipartite Entanglement Among Single Spins in Diamond

@article{Neumann2008MultipartiteEA,
  title={Multipartite Entanglement Among Single Spins in Diamond},
  author={P. Neumann and N. Mizuochi and F. Rempp and P. Hemmer and H. Watanabe and S. Yamasaki and V. Jacques and T. Gaebel and F. Jelezko and J. Wrachtrup},
  journal={Science},
  year={2008},
  volume={320},
  pages={1326 - 1329}
}
Robust entanglement at room temperature is a necessary requirement for practical applications in quantum technology. We demonstrate the creation of bipartite- and tripartite-entangled quantum states in a small quantum register consisting of individual 13C nuclei in a diamond lattice. Individual nuclear spins are controlled via their hyperfine coupling to a single electron at a nitrogen-vacancy defect center. Quantum correlations are of high quality and persist on a millisecond time scale even… Expand
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Comment on "Multipartite Entanglement Among Single Spins in Diamond"
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Two of the system's nuclear eigenstates are incorrectly described as product states when they are inherently entangled, and three of the six states reported, namely the odd-parity Bell states and the W state, were not actually produced. Expand
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Nitrogen-vacancy (NV) centers in diamond have recently emerged as a unique platform for fundamental studies in quantum information and nanoscience. The special properties of these impurity centersExpand
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