Unidirectional invisibility induced by PT-symmetric periodic structures.
نویسندگان
چکیده
Parity-time (PT) symmetric periodic structures, near the spontaneous PT-symmetry breaking point, can act as unidirectional invisible media. In this regime, the reflection from one end is diminished while it is enhanced from the other. Furthermore, the transmission coefficient and phase are indistinguishable from those expected in the absence of a grating. The phenomenon is robust even in the presence of Kerr nonlinearities, and it can also effectively suppress optical bistabilities.
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عنوان ژورنال:
- Physical review letters
دوره 106 21 شماره
صفحات -
تاریخ انتشار 2011