dorsal/arxiv
View SchemaLewenstein-Sanpera decomposition For Bell Decomposable
| Authors | S. J. Akhtarshenas, M. A. Jafarizadeh |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0207161 |
| URL | https://arxiv.org/abs/quant-ph/0207161 |
Abstract
We propose a simple geometrical approach for finding the Lewenstein-Sanpera decomposition of Bell decomposable states of 2 otimes 2 quantum systems. We show that in these systems, the weight of the pure entangled part in the decomposition is equal to the concurrence of the state. It is also shown that the optimized separable part of L-S decomposition minimizes the von Neumann relative entropy. We also obtain the decomposition for a class of mixed states by using some LQCC actions. It is also shown that for these states the average concurrence of L-S decomposition is equal to their concurrence.
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"abstract": "We propose a simple geometrical approach for finding the Lewenstein-Sanpera\ndecomposition of Bell decomposable states of 2 otimes 2 quantum systems. We\nshow that in these systems, the weight of the pure entangled part in the\ndecomposition is equal to the concurrence of the state. It is also shown that\nthe optimized separable part of L-S decomposition minimizes the von Neumann\nrelative entropy. We also obtain the decomposition for a class of mixed states\nby using some LQCC actions. It is also shown that for these states the average\nconcurrence of L-S decomposition is equal to their concurrence.",
"arxiv_id": "quant-ph/0207161",
"authors": [
"S. J. Akhtarshenas",
"M. A. Jafarizadeh"
],
"categories": [
"quant-ph"
],
"title": "Lewenstein-Sanpera decomposition For Bell Decomposable",
"url": "https://arxiv.org/abs/quant-ph/0207161"
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