Quantum-dot single-photon source based on a two-dimensional photonic crystal nanocavity transfer-printed on a Si wire waveguide
Abstract
We report a quantum-dot single-photon source (QD SPS) with a two-dimensional photonic crystal (2D PhC) nanocavity hybrid-integrated on a low-loss hydrogenated amorphous silicon waveguide via transfer printing. The large bandgap effect of the 2D PhC supports efficient coupling of QD radiation into the cavity. We suppressed unwanted cavity loss due to polarization conversion in the on-glass 2D PhC by loading an additional glass thin film on top of the structure, leading to low-loss evanescent coupling from the cavity to the underlying waveguide. We observed single-photon generation from a QD in the cavity and its propagation in the waveguide by low-temperature photoluminescence measurements.
Article Details
Journal Info
Journal of Applied Physics
American Institute of Physics
Authors (9)
A. Fujita
Department of Applied Physics and Physico-Informatics, Keio University 1 , Yokohama, Kanagawa 223-8522,
N. Pholsen
Institute of Industrial Science, The University of Tokyo 2 , Meguro, Tokyo 153-8505,
S. Ji
T. Kamei
National Institute of Advanced Industrial Science and Technology 4 , Tsukuba, Ibaraki 305-8569,
M. Okano
National Institute of Advanced Industrial Science and Technology 4 , Tsukuba, Ibaraki 305-8569,
M. Kakuda
Institute for Nano Quantum Information Electronics, The University of Tokyo 5 , 4-6-1 Komaba, Meguro-ku, Tokyo,
S. Iwamoto
Research Center for Advanced Science and Technology, The University of Tokyo 3 , Meguro, Tokyo 153-8505,
Y. Arakawa
Institute for Nano Quantum Information Electronics, The University of Tokyo 2 , Meguro, Tokyo 153-8505,
Y. Ota
Department of Applied Physics and Physico-Informatics, Keio University 1 , Yokohama, Kanagawa 223-8522,