Unidirectional invisibility induced by PT-symmetric periodic structures.

By Zin Lin, Hamidréza Ramézani, T. Eichelkraut, T. Kottos, Hui Cao, Demetrios N. Christodoulides. Physical Review Letters, 2011

1,546 citations recorded by the source corpus.

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.

Subfields: Atomic and Molecular Physics, and Optics, Mechanics of Materials

View Paper: https://www.semanticscholar.org/paper/c3d31cbd12d0db558614096924b71c0340cd300b

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Atomic and Molecular Physics, and Optics

In Mechanics of Materials

Andrea Alù

Citations in the corpus

Unidirectional reflectionless light propagation at exceptional points (2017, methodology): “[12] was based on multiscale asymptotic techniques and the rotating wave approximation [40].”
Invisibility and Cloaking: Origins, Present, and Future Perspectives (2015, background): “It is possible to show that such a system can be operated under an invisibility condition, known as an exceptional point in the theory of PT-symmetric systems, that enables zero scattering while maintaining the ability of the passive resistor to absorb power [195].”
Unidirectional Cloaking Based on Metasurfaces with Balanced Loss and Gain (2015, background): “Similarly to its 1D PT-symmetric counterparts [17]-[19], the proposed cloak exhibits strong scattering asymmetry for opposite incidence directions: although the scattering is identically zero for incidence from the +x direction, it becomes very large for incidence from the opposite one.”
Experimental realization of a Weyl exceptional ring (2018, neutral): “[38] Zin Lin, Hamidreza Ramezani, Toni Eichelkraut,”