An on-chip architecture for self-homodyned nonclassical light

TL;DR

This paper proposes an integrated on-chip quantum photonic device leveraging self-homodyning in quantum-dot photonic-crystal resonators to generate high-purity nonclassical light, advancing quantum state production on photonic chips.

Contribution

It introduces a novel on-chip cavity QED architecture utilizing self-homodyning for efficient quantum state generation and transmission, supported by detailed simulations.

Findings

Supports quantum state generation with high purity

Demonstrates robustness for multi-photon states

Uses FDTD and quantum optical simulations

Abstract

In the last decade, there has been remarkable progress on the practical integration of on-chip quantum photonic devices yet quantum state generators remain an outstanding challenge. Simultaneously, the quantum-dot photonic-crystal-resonator platform has demonstrated a versatility for creating nonclassical light with tunable quantum statistics, thanks to a newly discovered self-homodyning interferometric effect that preferentially selects the quantum light over the classical light when using an optimally tuned Fano resonance. In this work, we propose a general structure for the cavity quantum electrodynamical generation of quantum states from a waveguide-integrated version of the quantum-dot photonic-crystal-resonator platform, which is specifically tailored for preferential quantum state transmission. We support our results with rigorous Finite-Difference Time-Domain and quantum optical simulations, and show how our proposed device can serve as a robust generator of highly pure single- and even multi-photon states.