Design and Fabrication of Robust Hybrid Photonic Crystal Cavities

ORAL

Abstract

Heterogeneously integrated hybrid photonic crystal cavities enable strong light-matter interactions with solid-state, optically addressable quantum memories. A key challenge to realizing high quality factor (Q) hybrid photonic crystals is the reduced index contrast on the substrate compared to suspended devices in air. This challenge is particularly acute for color centers in diamond because of diamond's high refractive index, which leads to increased scattering loss into the substrate. Here we develop a design methodology for hybrid photonic crystals utilizing a detailed understanding of substrate-mediated loss, which incorporates sensitivity to fabrication errors as a critical parameter. Using this methodology we design robust, high-Q, GaAs-on-diamond photonic crystal cavities, and by optimizing our fabrication procedure we experimentally realize cavities with Q approaching 30,000 at a resonance wavelength of 955 nm.

*The authors acknowledge the use of Princeton's Imaging and Analysis Center (IAC), which is partially supported by the Princeton Center for Complex Materials (PCCM), a National Science Foundation (NSF) Materials Research Science and Engineering Center (MRSEC; DMR-2011750). The devices in this work were fabricated at the Princeton Materials Institute Micro/Nanofabrication Center

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Publication: Submitted manuscript: Design and Fabrication of Robust Hybrid Photonic Crystal Cavities

Presenters

  • Sean Karg

    • Princeton University

Authors

  • Sean Karg

    • Princeton University

  • Alexander Abulnaga

    • Princeton University

  • Sounak Mukherjee

    • Princeton University

  • Nathalie P de Leon

    • Princeton University

  • Loren N Pfeiffer

    • Princeton University

  • Adbhut Gupta

    • Princeton University

  • Kirk W Baldwin

    • Princeton University