Since its discovery, quantum entanglement has challenged some of the best established
views of the world: locality and reality. Quantum technologies promise to revolutionize …

Time, polarization, and wavelength multiplexing schemes have been used to satisfy the
growing need of transmission capacity. Using space as a new dimension for communication …

Abstract Optical multiplexing,,,,,,,,,–by creating orthogonal data channels has offered an
unparalleled approach for information encoding with substantially improved density and …

Recently, twisted bilayer photonic materials have been extensively used for creating and
studying photonic tunability through interlayer couplings. While twisted bilayer photonic …

An optical vortex having an isolated point singularity is associated with the spatial structure
of light waves. A polarization vortex (vector beam) with a polarization singularity has …

Internet data traffic capacity is rapidly reaching limits imposed by optical fiber nonlinear
effects. Having almost exhausted available degrees of freedom to orthogonally multiplex …

Cylindrical vector beams and vortex beams, two types of typical singular optical beams
characterized by axially symmetric polarization and helical phase front, possess the unique …

Optical vortex beams, possessing spatial polarization or phase singularities, have intriguing
properties such as the ability to yield super-resolved spots under focussing, and the ability to …

In this Letter, we introduce a new paradigm for achieving robust asymmetric generation of
acoustic vortex field through dual-layer metasurfaces by controlling their intrinsic topologic …

Light's orbital angular momentum (OAM) is a conserved quantity in cylindrically symmetric
media. However, it is easily destroyed by free-space turbulence or fiber bends, because …