کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1859439 1037325 2016 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Stokes vector and its relationship to Discrete Wigner Functions of multiqubit states
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
Stokes vector and its relationship to Discrete Wigner Functions of multiqubit states
چکیده انگلیسی


• Relationship between Stokes vector (SV) and discrete Wigner function (DWF) for arbitrary multiqubit states is presented.
• It is shown that SV and DWF are related to one another through Hadamard matrices.
• We show that the Hadamard matrices depend on the choice of the quantum net.
• Relationship between SV of the spin flipped state and the DWF is derived.
• Expression to compute n-concurrence of the pure n-qubit systems purely in terms of DWF is given.

A Stokes vectors and Discrete Wigner Functions (DWF) provide two alternate ways of representing the state of multiqubit systems. A general relationship between the Stokes vector and the DWF is derived for arbitrary n-qubit states for all possible choices of quantum nets. The Stokes vector and the DWF are shown to be related through a Hadamard Matrix. Using these results, a relationship between the Stokes vector of a spin-flipped state and the DWF is derived. Finally, we also present a method to express the Minkowskian squared norm of the Stokes vector, corresponding to n-concurrence in terms of the DWF.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 380, Issue 33, 29 July 2016, Pages 2489–2493
نویسندگان
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