Quantum State Tomography: 'the best' is the enemy of 'good enough'

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In this paper, we examine a variety of strategies for numerical quantum-state estimation from data of the sort commonly measured in experiments involving quantum state tomography. We find that, in some important circumstances, an elaborate and time-consuming numerical optimization to obtain 'the best' density matrix corresponding to a given data set is not necessary, and that cruder, faster numerical techniques may well be 'good enough'.
12 pages, 3 tables, 9 figures. Files: 9 PDF figures and 1 TEX file, all in ZIP archive

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Quantum Physics

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http://salesiana.dossiersoluciones.com/handle/123456789/169095

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0809.2376
 http://arxiv.org/abs/0809.2376

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arXiv