All-optical Realization of Quantum Ratchets

TL;DR

This paper proposes a theoretical model for an all-optical quantum ratchet using coupled waveguides, demonstrating quantum ratchet behavior through expectation value calculations in the optical system.

Contribution

It introduces a novel all-optical quantum ratchet model based on coupled waveguides, expanding the understanding of quantum ratchet phenomena in photonic systems.

Findings

Demonstrates quantum ratchet behavior in an optical system

Provides a theoretical framework for all-optical quantum ratchets

Shows potential for controlling light in quantum information applications

Abstract

A theoretical realization of an all-optical quantum ratchet is proposed in a medium composed of an array of coupled waveguides. By coupling light into two adjacent waveguides, and calculating the expectation value for the position space operator, we demonstrate the quantum ratchet like behavior of this optical system.