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Optimal Photonic Crystal Cavities for Coupling Nanoemitters to Photonic Integrated Circuits
Author(s) -
Olthaus Jan,
Schrinner Philip P. J.,
Reiter Doris E.,
Schuck Carsten
Publication year - 2020
Publication title -
advanced quantum technologies
Language(s) - English
Resource type - Journals
ISSN - 2511-9044
DOI - 10.1002/qute.201900084
Subject(s) - nanophotonics , optoelectronics , photonics , electronic circuit , photonic integrated circuit , photonic crystal , materials science , semiconductor , integrated circuit , quantum , nanolithography , computer science , physics , fabrication , medicine , alternative medicine , pathology , quantum mechanics
Photonic integrated circuits that are manufactured with mature semiconductor technology hold great promise for realizing scalable quantum technology. Efficient interfaces between quantum emitters and nanophotonic devices are crucial building blocks for such implementations on silicon chips. These interfaces can be realized as nanobeam optical cavities with high quality factors and wavelength‐scale mode volumes, thus providing enhanced coupling between nano‐scale quantum emitters and nanophotonic circuits. Realizing such resonant structures is particularly challenging for the visible wavelength range, where many of the currently considered quantum emitters operate, and if compatibility with modern semiconductor nanofabrication processes is desired. Here, it is shown that photonic crystal nanobeam cavities for the visible spectrum can be designed and fabricated directly on‐substrate with high quality factors and small mode volumes. Designs are compared based on deterministic and mode‐matching methods and the latter is found advantageous for on‐substrate realizations. The results pave the way for integrating quantum emitters with nanophotonic circuits for applications in quantum technology.