Muhammad Usman's Biography
Muhammad Usman received B.Sc. Electrical Engineering Honors (With highest distinction) and M.Sc. Electrical Engineering degrees from University of Engineering and Technology, Lahore Pakistan in 2003 and 2005, respectively. Muhammad Usman earned his Ph.D. degree in Electircal Engineering from Purdue University in July, 2010.
Usman's research is focused on the modeling and simulation of Quantum Dots for optical devices and quantum information processing. He used NEMO 3-D as a primary vehicle for modeling and simulation. His work quantitatively matched the experimental data and provided significant physical insight.
Usman also maintains his own personal web page http://web.ics.purdue.edu/~usman. Usman has a contributor web page on nanoHUB.org.
During his Ph.D. tenure in Prof. Klimeck's group, he worked on the following research projects:
- Electronic structure calculations of single and coupled quantum dots. In this project, the electronic structure including atomistic strain and piezo-electricity is computed. This work is presented in [P_2008_8] and [P_2006_9].
- Fine Structure Splitting in QDs Crystal Symmetry, Strain, and Piezo-Electricity. This work is published in [P_2007_1].
- Spectral energy tuning of InAs quantum dots with InGaAs quantum wells. In this project, the wavelength of single InAs quantum dots is engineered by varying the In composition of InGaAs quantum wells. This work is published in [P_2008_4] and [J_2009_14]
- Quantitative spectroscopy of bilayer QD molecules for Quantum Information Processing. An experimental bilayer QD molecule is quantitatively designed for coherent coupling of excitonic states. This work is under review in ACS Nano Journal 2010.
- TE/TM Ratio Tailoring of Single and Bilayer QDs for Optical Amplifiers. In this project, single and bilayer QD stacks are designed for isotropic polarization dependences of optical transition. The work is under review Journal of Applied Physics Publication 2010.
The brief details of these projects are described in the form of the quad charts.
Muhammand Usman is currently working on the following projects.
- Design of columnar QDs for isotropic polarization dependence of optical transitions.
- Comparision of atomistic VFF models.
Collaboration: We are always happy to collaborate with experimental groups to provide theoritical support and know how. Please feel free to contat and we can work together to achieve the goals.
email id: usman[at]alumni.purdue.edu.