We propose a cooperative asymmetry-induced transparency, CAIT, formed by collective excitations in metamaterial arrays of discrete resonators. CAIT can display a sharp transmission resonance even when the constituent resonators individually exhibit broad resonances. We further show how dynamically reconfiguring the metamaterial allows one to actively control the transparency. While reminiscent ...

Silicon-based micro- and nano-structures for light management at near-infrared visible frequencies have been widely exploited guided optics metasurfaces. However, emission with this material has hampered by the indirect character of its bandgap. Here it is shown that, via ion beam implantation, emitting G-centers can be directly embedded within Si-based Mie resonators previously obtained solid ...

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We report a reduction of the frequency noise in coplanar waveguide superconducting resonators. The reduction of 7 dB is achieved by removing the exposed dielectric substrate surface from the region with high electric fields and by using NbTiN. In a model-analysis the surface of NbTiN is found to be a negligible source of noise, experimentally supported by a comparison with NbTiN on SiOx resonat...

We report on our recent results concerning fabrication of high-Q whispering gallery mode (WGM) crystalline resonators, and discuss some possible applications of lithium niobate WGM resonators in nonlinear optics and photonics. In particular, we demonstrate experimentally a tunable third-order optical filter fabricated from the three metalized resonators; and report observation of parametric fre...

Magnetic-field-resilient superconducting coplanar waveguide (SCPW) resonators are essential for developing integrated quantum circuits. Molybdenum–Rhenium (MoRe), which is a disordered alloy forming highly transparent contact to the graphene and carbon nanotubes, would be promising platform realizing field-resilient SCPW combined with nano-hybrid devices. We fabricated MoRe investigated their m...

The dissipation of mechanical energy in 250-nm-thick, MHz-range silicon resonators is found to be strongly dependent on the chemical nature of the surface. As a result, sub-monolayer changes in the termination of 250-nm-thick resonators lead to significant changes in quality (Q) factor. The chemical origins of this effect are under investigation. Strategies for the formation of arbitrarily func...