Wave Chaos in a Cavity of Regular Geometry with Tunable Boundaries
arXiv:1902.07116 · doi:10.1103/PhysRevA.101.061801
Abstract
Wave chaotic systems underpin a wide range of research activities, from fundamental studies of quantum chaos via electromagnetic compatibility up to more recently emerging applications like microwave imaging for security screening, antenna characterisation or wave-based analog computation. To implement a wave chaotic system experimentally, traditionally cavities of elaborate geometries (bowtie shapes, truncated circles, parallelepipeds with hemispheres) are employed because the geometry dictates the wave field's characteristics. Here, we propose and experimentally verify a radically different paradigm: a cavity of regular geometry but with tunable boundary conditions, experimentally implemented by leveraging a reconfigurable metasurface. Our results set new foundations for the use and the study of chaos in wave physics.
arXiv comment10 pages, 6 figures, article submitted to Phys Rev Letter
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- Implementing Non-Universal Features with a Random Matrix Theory Approach: Application to Space-to-Configuration Multiplexing
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- Uncorrelated Configurations and Field Uniformity in Reverberation Chambers Stirred by Tunable Metasurfaces
- Superuniversal Statistics of Complex Time-Delays in Non-Hermitian Scattering Systems
- Deep learning estimation of complex reverberant wave fields by a programmable metasurface
- Diffuse field cross-correlations: scattering theory and electromagnetic experiments