A systematic design approach for one-dimensional and crossed photonic nanobeam cavities for quantum dot integration

TL;DR

This paper introduces a systematic design workflow for one-dimensional and crossed photonic nanobeam cavities, optimizing their parameters for better quantum dot integration and optical performance.

Contribution

A novel systematic approach for designing photonic nanobeam cavities that reduces parameter sweeps and enhances integration with quantum emitters.

Findings

Optimized cavity designs with controlled optical confinement.

Reduced radiative losses and linewidth broadening.

Efficient design process for integrated quantum photonics.

Abstract

We present a systematic workflow for the design of one-dimensional photonic crystal nanobeam cavities with non-zero cavity lengths. By simultaneously optimizing the lattice periodicity, air-hole geometry, and cavity length, our approach enables precise control of optical confinement while mitigating radiative losses and linewidth broadening effects. The method is further extended to the design of crossed nanobeam cavities with both matching and mismatched resonance frequencies. This strategy significantly reduces the need for extensive parameter sweeps, providing an efficient route toward optimized cavity designs for integrated quantum photonic applications. Moreover, the resulting structures are inherently compatible with the integration of single-photon emitters.