All the previous proposals for invisibility require materials with extreme properties. We show that transformation optics of a curved space relaxes these requirements and can lead to invisibility in a broad band of the spectrum.
© 2009 The Optical Society
U. Leonhardt, T. Tyc, and H. Chen, "Non-Euclidean Ideas for Broadband Invisibility," in Conference on Lasers and Electro-Optics/International Quantum Electronics Conference, OSA Technical Digest (CD) (Optical Society of America, 2009), paper JThC1.
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