کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5495740 1529825 2017 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enhanced diode-like operation mediated by an asymmetric non-Hermitian and nonlinear defect
ترجمه فارسی عنوان
عملکرد پیشرفته دیود به وسیله یک نقص غیر خطی و غیر خطی نامتقارن متمرکز شده است
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک و نجوم (عمومی)
چکیده انگلیسی
In this work we study the nonreciprocal transport along two tight-binding chains which are connected by a single defect having an asymmetric non-Hermitian nonlinear off-diagonal coupling. The spectrum of transmission and reflection, the gain curve and the rectifying factor are analytically obtained using a backward iterative process. A set of discrete linear Schroedinger equations is used to model the wave propagation through the two Hermitian side chains, while a discrete nonlinear Ablowitz-Ladik equation governs their coupling by the single defect. We show that the emergence of a multistability window induced by the non-linear contribution, together with the biased transport promoted by a parity-breaking non-Hermiticity, generates an efficient rectification of the transmitted wave component.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Annals of Physics - Volume 386, November 2017, Pages 282-290
نویسندگان
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