کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9727560 1480204 2005 18 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Some statistical features of the entanglement changes associated with quantum logical gates
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات فیزیک ریاضی
پیش نمایش صفحه اول مقاله
Some statistical features of the entanglement changes associated with quantum logical gates
چکیده انگلیسی
We investigate the changes in the entanglement of formation ΔE produced by quantum logical gates acting on composite quantum systems. We consider two-qubit, three-qubit, and two-qutrit systems. We prove that the ΔE-distributions generated by different quantum gates that can be obtained from each other by recourse to appropriate local unitary transformations are identical, even if these gates (in general) produce different changes of entanglement on individual states. We also study, numerically, some features of the probabilities for obtaining different values of ΔE. In the case of two-qubit we show that the ΔE-distributions are well fitted by simple q-MaxEnt distributions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica A: Statistical Mechanics and its Applications - Volume 356, Issues 2–4, 15 October 2005, Pages 385-402
نویسندگان
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