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arXiv · 2312.05638

Alignment-Free Coupling to Arrays of Diamond Microdisk Cavities for Scalable Spin-Photon Interfaces

Helaman R. Flores·Samuel R. Layton·Dirk Englund·Ryan M. Camacho
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Abstract

We propose a scalable design for a spin-photon interface to a color center in a diamond microdisk. The design consists of a silicon oxynitride hexagonal lattice overlaid on a diamond microdisk to enable vertical emission from the microdisk into low-numerical aperture modes, with quantum efficiencies as high as 45\% for a tin vacancy (SnV) center. Our design is robust to manufacturing errors, potentially enabling large scale fabrication of quantum emitters coupled to optical collection modes. We also introduce a novel approach for optimizing the free space performance of a complex structure using a dipole model, achieving comparable results to full-wave finite difference time domain simulations with a 650,000 times reduction in computational time.

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Helaman R. Flores, Samuel R. Layton, Dirk Englund, Ryan M. Camacho. 2023-12-09. Alignment-Free Coupling to Arrays of Diamond Microdisk Cavities for Scalable Spin-Photon Interfaces. https://arxiv.org/abs/2312.05638

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