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

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Cascaded two-photon nonlinearity in a one-dimensional waveguide with multiple two-level emitters.

¹Theoretical Division and Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.

Scientific Reports

|August 17, 2013

Summary

This summary is machine-generated.

We developed a theory for cascaded optical nonlinearity using few atoms and photons in a 1D waveguide. This model enables nonreciprocal multi-photon transmission and tunable nonlinear effects for quantum technologies.

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Area of Science:

Quantum optics
Condensed matter physics
Nanophotonics

Background:

Cascaded optical nonlinearity is crucial for quantum information processing.
Controlling light-matter interactions at the quantum level is challenging.
One-dimensional (1D) systems offer unique platforms for light-matter interactions.

Purpose of the Study:

To theoretically investigate a model for achieving cascaded optical nonlinearity with minimal atoms and photons.
To understand the origin of nonreciprocity in multi-photon transmission within a 1D photonic waveguide.
To explore the tunability of nonlinear optical effects based on system parameters.

Main Methods:

Theoretical modeling of photon-emitter interactions in a 1D photonic waveguide.
Analysis of resonant interactions between photons and two-level emitters (atoms or quantum dots).
Investigation of multi-photon transmission dynamics and nonreciprocity.

Main Results:

A theoretical framework for cascaded optical nonlinearity with few emitters and photons was established.
Nonreciprocal multi-photon transmission was demonstrated when emitters have differing transition energies.
Tunable two-photon nonlinear effects, including photon attraction/repulsion and fluorescence, were shown.

Conclusions:

The proposed model offers a pathway to realize efficient optical nonlinearity in scalable 1D systems.
Understanding and controlling nonreciprocity is key for developing advanced photonic devices.
The tunability of nonlinear effects provides a versatile platform for quantum applications.