Prof. Shun-Jen Cheng
Dr. rer. nat. in Physics,
University of Würzburg, Germany
- Science Building III 4F 408
- (03) 5712121 Ext.56168
- sjcheng@nycu.edu.tw
Research Fields
- Theory of condensed matter
- Low dimensional physics
- Quantum devices
- Many-body physics
Professional experience
- 2022 –
Chair, Department of Electrophysics, National Yang-Ming Chiao Tung University - 2021 – 2022
Vice Dean, College of Science, National Yang-Ming Chiao Tung University - 2021/02 –
Professor, Department of Electrophysics, National Yang Ming Chiao Tung University - 2011 – 2012
Chair of the Basic Science Teaching Committee of NCTU - 2016 – 2019
Vice Chair of the Department of Electrophysics, National Chiao Tung University (NCTU) - 2015 – 2018
Panel Member of Advisory Committee, Department of Natural Sciences of Ministry of Science and Technology, Taiwan - 2021/02 –
Professor, Department of Electrophysics, National Yang Ming Chiao Tung University - 2010/08 – 2021/01
Professor,Department of Electrophysics, National Chiao Tung University - 2006/08 – 2010/07
Associate Professor, Department of Electrophysics, National Chiao Tung University - 2003/08 – 2006/07
Assistant Professor, Department of Electrophysics, National Chiao Tung University - 2002/08 – 2003/07
Research Associate, Institute for Microstructural Sciences, National Research council, Ottawa, Canada. - 2001 – 2002
Postdoctoral studies, Max-Planck Institute for Solid State Research, Stuttgart, Germany. - 1995 – 1996
R&D Engineer, Acer Laboratories Inc. , Taipei. - 1993 – 1995
R&D Engineer Sharp Technology Inc., Taipei.
Research Fields
We are a “Solid-State Quantum Theory Group” at the Department of Electrophysics, NYCU. Our primary research interests are in the following themes: (a) Theory of quantum light sources: For over a decade, we have devoted ourselves to the studies of the underlying physics in the singlephoton and entangled photon emission from semiconductor quantum dots, including the multiexciton physics, excitonic fine structures, and exciton dynamics. We have developed an unified theory and multi-scaled numerical techniques for studying strained InAs self-assembled quantum dots and un-strained GaAs droplet epitaxial quantum dot, both of which are two of the most crucial nanostructures for photonic applications. Our theoretical studies often provide useful physical explanations for existing experimental observations, and in some cases even predicted new physics confirmed by later experiments. (b) Magnetism of magnetic ion doped nanocrystals: Magnetic ion doped semiconductor nanocrystals (typically, CdSe:Mn quantum dots) is regarded as promising building blocks in spintronics. Besides the application potential, the rich spin and magnetism properties have attracted a great deal of attention in fundamental research as well. In the subject, we have developed a powerful theory that allows us to deal with the nanocrystal doped by a huge number of magnetic ion dopants, beyond the widely used simple mean field theory and with no need of large-scaled computation. Our theory has successfully applied to expose the hidden anti-ferromagnetism in paramagnetic CdSe:Mn nanocrystals, and make significant progresses in the rapidly developing field of spintronics.
Currently, the following two themes are also being under our study. (c) Energy transfer theory (d) two-dimensional Dirac materials.
Small but energetic
Diversified but active
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CONTACT US
ADD: 1001 University Road, Hsinchu, Taiwan 30010
TEL:+886-3-572 0810
FAX:+886-3-572 0728
MAIL:f641126@nycu.edu.tw
lcchen@nycu.edu.tw