• Jehyung Kim (김제형)

  • Assistant Professor
  • Solid-state quantum photonics Experiment
  • Current Research Interests

    Quantum photonics research based on solid-state quantum structuresOur 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.

    1. Fabrication of quantum photonic devices for enhanced light-matter interaction
    2. Manipulation of quantum devices for engineered and integrated quantum system
    3. 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
    • B.S. in Physics (2007), Korea, Seoul, Korea
    • 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”
    • Postdoctoral research associate in the Group of Prof. Prof. Yong-Hoon Cho
    • Department of Physics, KAIST, Korea(2014.3-2014.8) Postdoctoral research associate in the Group of Prof. Edo Waks
    • Department of Electrical and Computer Engineering, University of Maryland, MD (2014-2017)
    • Assistance Professor in Department of Physics, UNIST (2017 – )
  • Selected Publications
    1. Super-radiant emission from quantum dots in a nanophotonic waveguide,  Nano Letters, 18,  4734 (2018)
    2. Hybrid integration of solid-state quantum emitters on a silicon photonic chip, Nano Letters, 17, 7394 (2017) 
    3. Two-photon interference from the far-field emission of chip-integrated cavity-coupled emitters, Nano Letters, 16, 7061 (2016)
    4. Two-photon interference from a bright single-photon source at telecom wavelengths, Optica, 3, 577 (2016)
    5. Self-aligned deterministic coupling of single quantum emitter to nanofocused plasmonic Modes, Proc. Natl. Acad. Sci., 112, 5280 (2015)
    6. Ultrafast single photon emitting quantum photonic structures based on a nano-obelisk, Scientific Reports, 3, 2150 (2013)