Left-to-right and right-to-left switching of a unidirectional reflection

Left-to-right and right-to-left switching of a unidirectional reflection We study the effect of unidirectional reflection in the bilayer optical model with the balanced loss and gain terms. It was found that if the impedances characterizing the scattering part are different from those describing the leads, an effect of switching of unidirectional reflection emerges. In this case the vanishing reflection occurs both for the left and for the right incident wave, depending on the wave frequency. It is shown that the alternation of the unidirectional reflection from the left to the right can occur even if the corresponding Hamiltonian is non-PT-symmetric. Our analytical results are demonstrated by numerical data. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review A American Physical Society (APS)

Left-to-right and right-to-left switching of a unidirectional reflection

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Left-to-right and right-to-left switching of a unidirectional reflection

Abstract

We study the effect of unidirectional reflection in the bilayer optical model with the balanced loss and gain terms. It was found that if the impedances characterizing the scattering part are different from those describing the leads, an effect of switching of unidirectional reflection emerges. In this case the vanishing reflection occurs both for the left and for the right incident wave, depending on the wave frequency. It is shown that the alternation of the unidirectional reflection from the left to the right can occur even if the corresponding Hamiltonian is non-PT-symmetric. Our analytical results are demonstrated by numerical data.
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Publisher
The American Physical Society
Copyright
Copyright © ©2017 American Physical Society
ISSN
1050-2947
eISSN
1094-1622
D.O.I.
10.1103/PhysRevA.96.013856
Publisher site
See Article on Publisher Site

Abstract

We study the effect of unidirectional reflection in the bilayer optical model with the balanced loss and gain terms. It was found that if the impedances characterizing the scattering part are different from those describing the leads, an effect of switching of unidirectional reflection emerges. In this case the vanishing reflection occurs both for the left and for the right incident wave, depending on the wave frequency. It is shown that the alternation of the unidirectional reflection from the left to the right can occur even if the corresponding Hamiltonian is non-PT-symmetric. Our analytical results are demonstrated by numerical data.

Journal

Physical Review AAmerican Physical Society (APS)

Published: Jul 31, 2017

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