N ov 2 00 7 A class of positive atomic maps
نویسنده
چکیده
We construct a new class of positive indecomposable maps in the algebra of d×d complex matrices. These maps are characterized by the ‘weakest’ positivity property and for this reason they are called atomic. This class provides a new reach family of atomic entanglement witnesses which define important tool for investigating quantum entanglement. It turns out that they are able to detect states with the ‘weakest’ quantum entanglement.
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تاریخ انتشار 2008