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物理学报. 2000, 49(10): 1912-1918.
doi: 10.7498/aps.49.1912.
混合纠缠态的几何描述
- 收稿日期: 2000-01-26
- 修回日期: 2000-04-20
- 刊出日期: 2000-05-05
摘要: 给出了Hilbert-Schmidt(H-S)空间中密度矩阵的向量表示，建立了完整的H-S空间中的度规 ，由此将混合纠缠态的判据纳入到直观的几何图像中，讨论了最大混合态附近可分离态的紧 致邻域，得到了关于该邻域体积测度的更强的结果.
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关键词:
- 纠缠 /
- 混合态 /
- Hilbert-Schmidt空间
English Abstract
THE GEOMETRICAL PICTURE OF MIXED ENTANGLED STATES
- Received Date:
26 January 2000
- Accepted Date:
20 April 2000
- Published Online:
05 May 2000
Abstract: The vector representation of density matrix is given in this paper. Any density matrix can be expanded in a real linear Hilbert space. The criteria for insepara bility of mixed states can be expressed in the geometrical picture. Such express ion is concise and perceptible. The neighborhood of the maximal mixed state is analyzed and a stronger result about the volume measure of the neighborhood is obtained.
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Keywords:
- Entanglement /
- Mixed States /
- Hilbert-Schmidt Space
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