کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5495988 1529834 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Super-quantum states in SU(2) invariant 3×N level systems
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
Super-quantum states in SU(2) invariant 3×N level systems
چکیده انگلیسی
Nonclassicality of quantum states is expressed in many shades, one of the most stringent of them being a new standard introduced recently in Bharath and Ravishankar (2014), by expanding the notion of local hidden variables (LHV) to generalised local hidden variables (GLHV). Considering the family of SU(2) invariant 3×N level systems, we identify those states that do not admit a GLHV description, which we designate as super-quantum (called exceptional in Bharath and Ravishankar (2014). We show that all super-quantum states admit a universal geometrical description, and that they are most likely to lie on a line segment in the manifold, irrespective of the value of N. We also show that though a super-quantum state can be highly mixed, its relative rank with respect to the uniform state is always less than that of a state which admits a GLHV description.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Annals of Physics - Brought to you by:College of Engineering Chengannur - 'Renewal due by 31 Dec 2017'
نویسندگان
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