# Resonant Parametric Photon Generation in Waveguide-coupled Quantum Emitter Arrays

## TL;DR

This paper presents a theoretical study of parametric photon generation in waveguide-coupled quantum emitter arrays with modulated resonance frequencies, demonstrating control over emission properties and spectrum dependence on anharmonicity.

## Contribution

It introduces a new theoretical framework for controlling photon emission in quantum emitter arrays via temporal modulation, linking it to the dynamical Casimir effect.

## Key findings

- Emission directionality can be controlled by modulation phases.
- Photon-photon correlations are tunable through modulation.
- Emission spectrum depends on emitter potential anharmonicity.

## Abstract

We have developed a theory of parametric photon generation in the waveguides coupled to arrays of quantum emitters with temporally modulated resonance frequencies. Such generation can be interpreted as a dynamical Casimir effect. We demonstrate numerically and analytically how the emission directionality and photon-photon correlations can be controlled by the phases of the modulation. The emission spectrum is shown to be strongly dependent on the anharmonicity of the emitter potential. Single- and double-excited state resonances have been identified in the emission spectrum.