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arXiv · 1210.7629

PT Metamaterials via Complex-Coordinate Transformation Optics

Giuseppe Castaldi·Silvio Savoia·Vincenzo Galdi·Andrea Alu'·Nader Engheta
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Abstract

We extend the transformation-optics paradigm to a complex spatial coordinate domain, in order to deal with electromagnetic metamaterials characterized by balanced loss and gain, giving special emphasis to parity-time (PT) symmetric metamaterials. We apply this general theory to complex-source-point radiation and anisotropic transmission resonances, illustrating the capability and potentials of our approach in terms of systematic design, analytical modeling and physical insights into complex-coordinate wave-objects and resonant states.

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Giuseppe Castaldi, Silvio Savoia, Vincenzo Galdi, Andrea Alu', Nader Engheta. 2012-10-29. PT Metamaterials via Complex-Coordinate Transformation Optics. https://doi.org/10.1103/physrevlett.110.173901

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