Quantum light_matter

Our group is interested in ultrafast light-matter interactions in quantum nanoscale devices. We are specialized in the ultrafast time-resolved investigation using a femtosecond (fs) laser from visible to terahertz (THz) ranges. Being capable of measuring “fast” transients of optical and electronic phenomena, we are able to probe optoelectronic photoresponses down to sub-micrometer (sub-µm) with sub-picosecond (sub-ps) resolution. We fabricate the nanoscale devices, measure the electrical transport, and investigate the associated quantum optical phenomena. Target quantum phenomena include “fast” optical manipulation of novel quantum degree-of-freedoms, e.g. spin, valley, topology, etc., in van der Waals 2D materials, topological insulators, and quantum plasmonics.

[2019. 3. 7] Prof. Choi received Scientist and Engineer Award of This Month (이달의 과학기술인상) from Ministry of Science and ICT (과학기술정통부) & National Science Foundation of Korea (한국연구재단).
[2018. 10. 12] Prof. Choi’s advisor’s advisor (Gerald Mourou) received Nobel Prize for Physics 2018. 
[2018. 6. 12] Nature Nanotechnology by S. Cha and M. Noh on spin-valley opto-physics was accepted. 
[2018. 1. 18] Nano Letters by C. In on topological insulator plasmons was published.
[2018. 3. 22] Nature Communications by S. Sim and D. Lee on exciton quantum beats was published. 
[2018. 3. 8] Professor Choi received “Excellent Achievement Award” from Yonsei University.
[2017. 7. 12] Excellent presentation award (Oral): Optical Society of Korea Summer Meeting by D. Lee.
[2017. 4. 7] Professor Choi received “Young Research Achievement Award” (신진학술상) from Korean Graphene Society.
[2017. 2. 15] ACS Photonics by J. Kim and S. Park on graphene-topological insulator is accepted.
[2016. 12. 31] 삼성미래기술육성센터” on femtosecond spin-valley optoelectronics is renewed.
[2016. 11. 18] Nature Communications by S. Sim and D. Lee on 2D materials is accepted.
[2016. 11. 9] Nature Communications on 2D materials is accepted.
[2016. 10. 21] Excellent presentation award (Oral): Korean Physical Society Fall meeting by S. Sim.
[2016. 8. 29] ACS Nano on perovskite films is published.
[2016. 6. 7] “Basic Research Laboratory” (기초연구실) in Korea is granted.
[2016. 5. 24] ACS Photonics by S. Sim’s work on topological insulators is accepted.
[2016. 1. 20] Nature Communications by S. Cha’s work on 2D materials is accepted.
[2015. 12. 2] “National Leading Research Laboratory” (국가지정연구실) in Korea is granted.
[2015. 10. 23] Advanced Materials by C. In’s work on graphene metadevice is published.
[2015. 10. 6] Nature Communications by S. Sim’s work on topological insulators is accepted.
[2015. 7. 13] Nature Communications on Flexible 2D materials photodetector is accepted.
[2015. 6. 15] Nature Communications on optoelectronic composites of 2D materials is accepted.
[2015. 5. 1] Nature Communications on stacking-dependent 2D materials is accepted.
[2015. 7. 21] Global Ph.D. Fellowship by C. In from NRF (한국연구재단) is granted.
[2015. 2. 11] 삼성전자 휴먼테크 논문대상: C. In (silver) and S. Sim (bronze)
[2014. 11. 30] 삼성미래기술육성센터” on spin-valley optoelectronics is granted.

[석/박사과정 연구원 모집]
전공분야: 전기전자공학, 물리학
대상: 대학원 진학 예정인 학부 4학년
연구분야: 초고속 레이저를 이용한 양자 물질 및 소자 연구 (quantum materials and devices using ultrafast lasers) 
장학금: 대학원 등록금 전액 + 생활비
연락처: 최현용 교수 (hychoi@yonsei.ac.kr)


Copyright ⓒ Ultrafast Quantum Photonics Laboratory, 2011
C625, School of Electrical and Electronic Engineering, Yonsei University
50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea (South Korea)