Transport and Quantum Walk of Nonclassical Light in Coupled Waveguides

TL;DR

This paper investigates how nonclassical light propagates and exhibits quantum walks in coupled waveguides, demonstrating entanglement generation and potential for quantum information storage.

Contribution

It introduces a detailed analysis of quantum transport and walks of nonclassical light in coupled waveguides with low decoherence, highlighting entanglement creation and quantum effects.

Findings

Squeezing transfers between waveguides

Input nonclassical light generates entanglement

Quantum Talbot effect discussed

Abstract

We study the transport and quantum walk of nonclassical light in an array of coupled waveguides which have novel properties like very low decoherence and thus making them ideal for storage of quantum information. We show how squeezing gets turned over from one waveguide to another. We further show how input nonclassical light can generate entanglement among different waveguides. Our results involve both first quantization due to array structure and second quantization due to the quantum nature of fields and can also be used to discuss the Talbot effect in the quantum regime.