Entanglement Manipulation in a Quantum Chaotic Optical Fiber by Modifying its Geometry

TL;DR

This paper investigates how altering the geometry of an optical fiber to induce chaotic boundary conditions can enhance the entanglement of classical electromagnetic fields, offering a new method for entanglement manipulation.

Contribution

It introduces a novel approach using a quantum chaotic billiard geometry in optical fibers to control and enhance mode entanglement through boundary deformation.

Findings

Geometry modification from regular to chaotic enhances entanglement.

Proposes a simple experimental setup with a specially designed fiber.

Chaotic boundary conditions increase non-separable entanglement.

Abstract

The effect of boundary deformation on the non-separable entanglement which appears in the classical elec- tromagnetic field is considered. A quantum chaotic billiard geometry is used to explore the influence of a mechanical modification of the optical fiber cross-sectional geometry on the production of non-separable entan- glement within classical fields. For the experimental realization of our idea, we propose an optical fiber with a cross section that belongs to the family of Robnik chaotic billiards. Our results show that a modification of the fiber geometry from a regular to a chaotic regime can enhance the transverse mode entanglement. Our proposal can be realized in a very simple experimental set-up which consists of a specially designed optical fiber where non-entangled light enters at the input end and entangled light propagates out at the output end after interacting with a fiber boundary that is known to generate chaotic behavior.