Hybrid integration of deterministic quantum dots-based single-photon sources with CMOS-compatible silicon carbide photonics

• URL: http://arxiv.org/abs/2203.12202v1
• Date: Wed, 23 Mar 2022 05:32:06 GMT
• Title: Hybrid integration of deterministic quantum dots-based single-photon sources with CMOS-compatible silicon carbide photonics
• Authors: Yifan Zhu, Wenqi Wei, Ailun Yi, Tingting Jin, Chen Shen, Xudong Wang, Liping Zhou, Chengli Wang, Weiwen Ou, Sannian Song, Ting Wang, Jianjun Zhang, Xin Ou and Jiaxiang Zhang
• Abstract summary: Thin film 4H-Silicon carbide (4H-SiC) is emerging as a contender for realizing large-scale optical quantum circuits. We demonstrate hybrid integration of self-assembled InGaAs quantum dots (QDs) based single-photon sources (SPSs) with wafer-scale 4H-SiC photonic chips prepared by ion slicing technique.
• Score: 19.136086737501603
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Thin film 4H-silicon carbide (4H-SiC) is emerging as a contender for realizing large-scale optical quantum circuits due to its high CMOS technology compatibility and large optical nonlinearities. Though, challenges remain in producing wafer-scale 4H-SiC thin film on insulator (4H-SiCOI) for dense integration of photonic circuits, and in efficient coupling of deterministic quantum emitters that are essential for scalable quantum photonics. Here we demonstrate hybrid integration of self-assembled InGaAs quantum dots (QDs) based single-photon sources (SPSs) with wafer-scale 4H-SiC photonic chips prepared by ion slicing technique. By designing a bilayer vertical coupler, we realize generation and highly efficient routing of single-photon emission in the hybrid quantum photonic chip. Furthermore, we realize a chip-integrated beamsplitter operation for triggered single photons through fabricating a 1x2 multi-mode interferometer (MMI) with a symmetric power splitting ratio of 50:50. The successful demonstration of heterogeneously integrating QDs-based SPSs on 4H-SiC photonic chip prepared by ion slicing technique constitutes an important step toward CMOS-compatible, fast reconfigurable quantum photonic circuits with deterministic SPSs.

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