Seminar & Colloquium
[세미나: 7월 4일(월), 오전 9시 30분] Northwestern University, 장우제 박사
Title
Doped Nanocrystals Towards Quantum Information Applications
Speaker
Northwestern University, 장우제 박사
Education
- 2014.02. B.A. Seoul National University , Materials Science and Engineering, Cum Laude
- 2016.02. M.S. in Bioengineering, Seoul National University (Advisor: Ki Tae Nam)
- 2022.06. Ph.D. in Materials Science and Engineering, Northwestern University (Advisor: Emily A. Weiss)
Professional experiences
- 2015.08. ~ 2016.02., Visiting Reasearcher, Tokyo Institute of Technology, Earth Life Science Institute (Advisor: Shawn E. McGlynn)
- 2022.08. ~ , Post-Doctoral Researcher, University of Texas at Austin, McKetta Department of Chemical Engineering (Advisor: Delia J. Milliron)
| Date | Monday, July 4th, 2022
| Time | 09:30 ~
| Venue | 33동 223호 (동부 세미나실)
[Abstract]
The development of optically injected spin qubits is a steppingstone towards the stationary-flying qubit conversion process for the quantum information society. Although semiconducting nanocrystal has been investigated as a candidate for optically injected spin generator, short spin dephasing lifetime and the ultrafast trapping of the excitons do not allow semiconducting nanocrystal to be a suitable stationary spin qubit system compared to the organometallic-based spin qubit generator. Impurity doped nanocrystals, which have modified the electronic structure, can ‘transfer’ the injected spin information from nanocrystals to their dopants and store the spin information with a lifetime comparable with up-to-date molecular spin qubits. Doping the lanthanide ion, a well-known spin qubit generator, can be a strategy for storing injected spin information after the excitonic information from nanocrystals are transferred. We also seek out the possibility of using the stored spin information from the dopant to emit a photonic qubit, with the assistance of an optical cavity structure. Our work established a platform to use a semiconducting nanocrystal system toward a feasible quantum information mediator.
| Host | 남기태 교수(02-880-8305)