Eur. Phys. J. Special Topics 160, 269-280 (2008)
https://doi.org/10.1140/epjst/e2008-00730-y

Classical radiation in optical fibers as model for quantum entanglement

Classical radiation and entanglement

P.N. Lebedev Physical Institute, 119049 Moscow, Russia

Abstract

Using known description of the classical electromagnetic radiation propagating in optical fibers by the Schrödinger-like equation (Fock–Leontovich paraxial approximation), the model of entanglement phenomenon is considered. Gaussian light beams in optical fibers demonstrate a formal mathematical identity to Gaussian two-mode quantum fields. In view of this, the criterion of separability and entanglement of Gaussian light beams is implemented in fiber optics.