778 citations · 4.4k across the 68 of their papers we have counts for
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Transforming space with non-Hermitian dielectrics
Ivor Krešić, Konstantinos G. Makris, Ulf Leonhardt +1
Coordinate transformations are a versatile tool to mould the flow of light, enabling a host of astonishing phenomena such as optical cloaking with metamaterials. Moving away from t…
Dialogues about geometry and light
David Bermudez, Jonathan Drori, Ulf Leonhardt
Throughout human history, people have used sight to learn about the world, but only in relatively recent times the science of light has been developed. Egyptians and Mesopotamians…
Optical black hole lasers
Daniele Faccio, Tal Arane, Marco Lamperti +1
Using numerical simulations we show how to realise an optical black hole laser, i.e. an amplifier formed by travelling refractive index perturbations arranged so as to trap light b…
Invisibility cloaking without superluminal propagation
Janos Perczel, Tomas Tyc, Ulf Leonhardt
Conventional cloaking based on Euclidean transformation optics requires that the speed of light should tend to infinity on the inner surface of the cloak. Non-Euclidean cloaking st…
Partial Transmutation of Singularities in Optical Instruments
Janos Perczel, Ulf Leonhardt
Some interesting optical instruments such as the Eaton lens and the Invisible Sphere require singularities of the refractive index for their implementation. We show how to transmut…
Conformal cloak for waves
Huanyang Chen, Ulf Leonhardt, Tomas Tyc
Conformal invisibility devices are only supposed to work within the validity range of geometrical optics. Here we show by numerical simulations and analytical arguments that for ce…