Twisting superconductors with light

Spin squeezing via one-axis twisting with coherent light.

We propose a new method of spin squeezing of atomic spin, based on the interactions between atoms and off-resonant light which are known as paramagnetic Faraday rotation and the fictitious magnetic field of light. Since the projection process, squeezed light, or special interactions among the atoms are not required in this method, it can be widely applied to many systems. The attainable range o...

folding and twisting waves of light YURI

Intensity distribution in an optical beam carrying a vortex (mesh) and its helical wave front (color surface).

Twisting of light around rotating black holes

Fabrizio Tamburini, Bo Thidé, Gabriel Molina-Terriza and Gabriele Anzolin Department of Astronomy, University of Padova, vicolo dell'Osservatorio 3, I-35122 Padova, Italy, EU Swedish Institute of Space Physics, Box 537, Ångström Laboratory, SE-75121 Uppsala, Sweden, EU QsciTech and Department of Physics and Astronomy, Macquarie University, 2109 NSW Australia ICFO, Parc Mediterrani de la Tecnolo...

Twisting light by nonlinear photonic crystals.

We report the observation of nonlinear interactions in quadratic nonlinear crystals having a geometrically twisted susceptibility pattern. The quasi-angular-momentum of these crystals is imprinted on the interacting photons during the nonlinear process so that the total angular momentum is conserved. These crystals affect three basic physical quantities of the output photons: energy, translatio...

Inelastic Light Scattering Studies of Borocarbide Superconductors