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Unidirectional output from a quantum-dot single-photon source hybrid integrated on silicon

2021; Optica Publishing Group; Volume: 29; Issue: 23 Linguagem: Inglês

10.1364/oe.440218

1094-4087

Ryota Katsumi, Yasutomo Ota, Takeyoshi Tajiri, Masahiro Kakuda, Satoshi Iwamoto, Hidefumi Akiyama, Yasuhiko Arakawa,

Neural Networks and Reservoir Computing

We report a quantum-dot single-photon source (QD SPS) hybrid integrated on a silicon waveguide embedding a photonic crystal mirror, which reflects photons and enables efficient unidirectional output from the waveguide. The silicon waveguide is constituted of a subwavelength grating so as to maintain the high efficiency even under the presence of stacking misalignment accompanied by hybrid integration processes. Experimentally, we assembled the hybrid photonic structure by transfer printing and demonstrated single-photon generation from a QD and its unidirectional output from the waveguide. These results point out a promising approach toward scalable integration of SPSs on silicon quantum photonics platforms.