Generation of polarization entanglement via the quantum Zeno effect

TL;DR

This paper introduces a novel method to generate polarization entanglement between photons using the quantum Zeno effect, supported by analytical and numerical analysis, and extends it to create three-qubit W-states in coupled waveguides.

Contribution

It presents a new technique for quantum state engineering of entangled photons via the quantum Zeno effect, including the generation of three-qubit W-states.

Findings

Polarization entanglement can be generated using the quantum Zeno effect.

The method is extended to three coupled waveguides for W-state creation.

Numerical simulations support the analytical results.

Abstract

The quantum Zeno effect reveals that the continuous observation of a quantum system can result in significant alterations to its evolution. Here, we present a method for establishing polarization entanglement between two initially unentangled photons in coupled waveguides via the quantum Zeno effect. We support our analytical investigation with numerical simulations of the underlying Schrodinger equation describing the system. Further, we extend our technique to three coupled waveguides in a planar configuration and determine the parameter regime required to generate three-qubit W-states. Our findings offer a powerful quantum state engineering approach for photonic quantum information technologies.