Prof. Myung-Ki Kim

1. Indistinguishable photons from an artificial atom in silicon photonics

   L. Komza*, P. Samutpraphoot*, M. Odeh, Y.-L. Tang, M. Mathew, J. Chang, H. Song, M.-K. Kim, Y. Xiong, G. Hautier, A. Sipahigil

   Nature Communications 15, 6920 (2024)

   DOI arXiv BibTeX Abstract

   @article{komza_indistinguishable_2024,
     title = {Indistinguishable photons from an artificial atom in silicon photonics},
     volume = {15},
     url = {https://www.nature.com/articles/s41467-024-51265-1},
     doi = {10.1038/s41467-024-51265-1},
     journal = {Nature Communications},
     number = {1},
     pages = {6920},
     issn = {2041-1723},
     author = {Komza, Lukasz and Samutpraphoot, Polnop and Odeh, Mutasem and Tang, Yu-Lung and Mathew, Milena and Chang, Jiu and Song, Hanbin and Kim, Myung-Ki and Xiong, Yihuang and Hautier, Geoffroy and Sipahigil, Alp},
     month = aug,
     year = {2024},
     arxiv = {2211.09305}
   }
   

   Abstract Silicon is the ideal material for building electronic and photonic circuits at scale. Integrated photonic quantum technologies in silicon offer a promising path to scaling by leveraging advanced semiconductor manufacturing and integration capabilities. However, the lack of deterministic quantum light sources and strong photon-photon interactions in silicon poses a challenge to scalability. In this work, we demonstrate an indistinguishable photon source in silicon photonics based on an artificial atom. We show that a G center in a silicon waveguide can generate high-purity telecom-band single photons. We perform high-resolution spectroscopy and time-delayed two-photon interference to demonstrate the indistinguishability of single photons emitted from a G center in a silicon waveguide. Our results show that artificial atoms in silicon photonics can source single photons suitable for photonic quantum networks and processors.

2. Three-dimensional programming of nanolaser arrays through a single optical microfiber

   D. I. Song, A. Yu, P. Samutpraphoot, J. Lee, M. Kim, B. J. Park, A. Sipahigil, M.-K. Kim

   Optica 9, 1424 (2022)

   DOI BibTeX Abstract

   @article{song_three-dimensional_2022,
     title = {Three-dimensional programming of nanolaser arrays through a single optical microfiber},
     volume = {9},
     url = {https://opg.optica.org/abstract.cfm?URI=optica-9-12-1424},
     doi = {10.1364/OPTICA.471715},
     journal = {Optica},
     number = {12},
     pages = {1424},
     issn = {2334-2536},
     author = {Song, Da In and Yu, Aran and Samutpraphoot, Polnop and Lee, Jungmin and Kim, Moohyuk and Park, Byoung Jun and Sipahigil, Alp and Kim, Myung-Ki},
     month = dec,
     year = {2022}
   }
   

   Efficient programming of integrated small optical sources is a key component of photonic technologies. However, as the density of laser arrays increases, the miniaturization and scalability of laser control using an electric drive are pushed to the limit. This study presents an all-optical drive scheme for complete programming of nanolaser arrays through a single waveguide port. Three photonic crystal nanolasers, printed three-dimensionally on the sides of a 2-µm-diameter fiber with an 18 µm laser spacing, were entirely controlled by modal interference, adjusted by the polarization and pulse width of the pump beam through the same fiber. Our approach is applicable to various small optical sources coupled to a single waveguide, and it will lay the foundation for applications in high-density optical integrated circuits, biosensing, and quantum network technologies.

* Equal contribution