물리학과물리학과

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People

Professor
People

Professor

Jehyung Kim김제형

  • Single photon source
  • photoluminescence
  • single photons
  • strain engineering
  • WSe2 monolayer
  • microcantilever
  • quantum sensing
  • quantum dots

연구주제

Integrated quantum photonics Experiment

  • 연구분야Integrated quantum photonics ; Quantum light sources ; Solid-state quantum emitters
  • 연구실Quantum Photonic Integrated Device Lab.

Current Research Interests

  • Quantum photonics research based on solid-state quantum structures.
  • Our research aims to efficiently generate and manipulate photonic and spin qubits from solid-state quantum structures for scalable and integrated quantum system.
  • Solid-state quantum systems such as quantum dots, defects, and atomic layersprovide the most promising platform for studying light-matter interaction and quantum information science on a chip. These systems have many advantages as a source of stationary and photonic qubits: fast operation, current-driven device, electrical control, integration with optoelectronic components on-a-chip. However, these man-made quantum structures also have many obstacles due to the randomness in their position and energy. Also strong phonon interaction with environment decores the quantum state. Therefore, new materials, device structures, and control techniques are required for practical use of the solid-state quantum system.
  • To solve the existing problems in the solid-state quantum systems and to achieve the challenging goals we perform the following experiments based on fundamental understating of quantum physics.
  • Fabrication of quantum photonic devices for enhanced light-matter interaction
  • Manipulation of quantum devices for engineered and integrated quantum system
  • Optical control and characterization of quantum system for studying and controlling the quantum state.
  • Research topics include
  • Solid-state quantum emitters (single-photon sources)
  • Cavity-quantum electrodynamics
  • Quantum entanglement between multiple qubits
  • Photonic quantum simulator
  • On-chip integrated solid-state quantum devices

Biographical Sketch

  • Associate Professor in Department of Physics, UNIST (2021 – )
  • Visiting Fellow, JILA in University of Colorado Boulder (2023 - 2024)
  • Assistant Professor in Department of Physics, UNIST (2017 – 2021 )
  • Assistant Professor in Department of Physics, UNIST (2017 – 2021 )
  • Postdoc researcher, Department of Electrical and Computer Engineering, University of Maryland, MD (2014-2017)
  • Postdoc researcher, Department of Physics, KAIST, Korea (2014.3-2014.8)
  • Ph.D. in Physics (2014), KAIST, Daejeon, Korea “Group III-nitride based self-assembled quantum dots and single quantum dots in nanostructures for quantum photonics” Advisor: Prof. Yong-Hoon Cho”

Selected Publications

  • Cavity-mediated collective emission from steady-state subradiance, Nature Commun. 16, 6346 (2025)
  • Plug-and-play single-photon devices with efficient fiber-quantum dot interface, Adv. Quantum. Tech. 2200022 (2022)
  • Strong zero-phonon transition from point defect-stacking fault complexes in silicon carbide nanowires, Nano Letters 21, 9187 (2021)
  • Hybrid integration methods for on-chip quantum photonics, Optica 7, 291 (2020)
  • Super-radiant emission from quantum dots in a nanophotonic waveguide, Nano Letters, 18, 4734 (2018)
  • Hybrid integration of solid-state quantum emitters on a silicon photonic chip, Nano Letters, 17, 7394 (2017)

Lab Introduction video

  • https://youtu.be/sGe0m-8F6ms

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