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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

Published on: September 5, 2019

Spin-controlled photonics via temporal anisotropy.

Carlo Rizza¹, Giuseppe Castaldi², Vincenzo Galdi²

¹Department of Physical and Chemical Sciences, University of L'Aquila, L'Aquila, I-67100, Italy.

Nanophotonics (Berlin, Germany)

|December 5, 2024

Summary

This summary is machine-generated.

Temporal metamaterials with time-varying properties enable novel field manipulations. Anisotropic temporal slabs demonstrate control over the wave-spin dimension for spin-controlled photonics, analog computing, and vortex generation.

Keywords:

analog computing anisotropy metamaterials spin-orbit interaction time-varying

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Last Updated: Jun 5, 2025

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Area of Science:

Physics
Materials Science
Photonics

Background:

Temporal metamaterials utilize time-varying constitutive properties for advanced field manipulation.
Anisotropic temporal slabs exhibit abrupt transitions between isotropic and anisotropic responses over time.

Purpose of the Study:

To explore the capabilities of anisotropic temporal slabs for manipulating the wave-spin dimension.
To demonstrate spin-controlled photonic operations, including analog computing and vortex generation.

Main Methods:

Investigated anisotropic temporal slabs with abrupt, time-varying changes in material response.
Utilized theoretical analysis and simulations to model wave-spin interactions within these slabs.

Main Results:

Anisotropic temporal slabs effectively manipulate the wave-spin dimension.
Demonstrated spin-dependent analog computing and spin-orbit interaction effects for vortex generation.

Conclusions:

Anisotropic temporal slabs offer a novel platform for advanced photonic operations.
Potential applications include communications, optical processing, and quantum technologies.