Present Gwangju Institute of Science and Technology – Professor 2003-2013 Inha University – Professor 2006-Present 교과부 리더연구사업(창의) 단장 1999-2003 ETRI, Senior Researcher 2000-2003 과기부 창의사업단장 1996-1999 MIT, Postdoc

- Quantum Optics and Nonlinear Optics: MOT, Slow/Stop Light, Photon Echoes, NDFWM - Quantum Information and Processing: Quantum Memories, Quantum Repeaters, Quantum Interface - fs Semiconductor Photonics: Quamtum Coherence Control, All-optical Logic Gates - Nano Photonics: NV diamond-based Photonics, Bio-sensors/Bio-imaging, SPP