Scientists / Open questions
Ulf Leonhardt
Quantum optics; transformation optics
6 questions
Practical realization of transmutation-based omnidirectional retroreflectors: impedance compensation, discretization and defect-core errors, and scaling to terahertz and optical frequencies
Origin and quantitative mechanism of the enhanced negative-frequency mode conversion of water waves at a current horizon
The slow-light quantum catastrophe: viability, observation, and the classification of quantum catastrophes
Reliable compensation of detection losses in direct-sampling homodyne reconstruction of optical quantum states
Optics of nonuniformly moving media beyond the idealized model: dispersive, polarization-resolved, realistic-flow, and quantum extensions of the effective-geometry picture
Experimental realization of broadband non-Euclidean invisibility cloaking (the Leonhardt-Tyc virtual-sphere cloak)