对《金刚石中单自旋间的多体纠缠》的评论
Comment on "Multipartite entanglement among single spins in diamond".
作者信息
Lovett Brendon W, Benjamin Simon C
机构信息
Department of Materials, Oxford University, Oxford OX1 3PH, UK.
出版信息
Science. 2009 Feb 27;323(5918):1169; author reply 1169. doi: 10.1126/science.1168458.
PMID:19251613
Abstract
Neumann et al. (Reports, 6 June 2008, p. 1326) recently reported the preparation of multiparticle entanglement among single spins in diamond. However, two of the system's nuclear eigenstates are incorrectly described as product states when they are inherently entangled. Consequently, three of the six states reported, namely the odd-parity Bell states and the W state, were not actually produced.
摘要
诺伊曼等人（《报告》，2008年6月6日，第1326页）最近报道了在金刚石中实现单自旋之间的多粒子纠缠制备。然而，该系统的两个核本征态本质上是纠缠的，却被错误地描述为积态。因此，所报道的六个态中的三个，即奇宇称贝尔态和W态，实际上并未产生。
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