Affiliation:
1. V.I. Vernadsky Crimean Federal University
2. Russian Quantum Center
3. MIPT
Abstract
We study the propagation of circularly-polarized optical vortices of higher order topological charges ℓ ≥ 2 in a sandwich of multihelical - anisotropic - multihelical fibers on the basis of the Jones formalism for modes with orbital angular momentum. We demonstrate that such a system can operate as the all - fiber two - bit SWAP as well as universal tree - bit controlled-SWAP (Fredkin) gates over states of optical vortices, in which the mode radial number carries the control bit, while circular polarization and topological charge are the controlled bits.
Funder
Russian Science Foundation
Megagrant
Subject
Atomic and Molecular Physics, and Optics