I am an electrical engineer and a quantum physicist. I work in multi-disciplinery area of research, involving rigorous knowledge of nanoscale electronics, condensed-matter physics, quantum chemistry, and multi-scale computational modeling.
Broadly speaking, I am interested in all aspects of light matter interaction. My research efforts are primarily aimed at exploiting the promising properties of semiconductors to design next-generation optoelectronic devices, photovoltaic devices, and more recently qubit devices.
More specifically, I work on the theory, modeling, and simulations of semiconductor materials, their constituent alloys, and low-dimensional devices.
My past and ongoing research efforts are motivated by some of the most intriguing questions that have fascinated the condensed-matter physics community
during the last few decades, such as:
Exploiting the long decoherence times of donor-silicon based qubit systems for quantum computing architectures
Designing the efficient photonic devices from the self-assembled quantum dots by engineering their output wavelength and light polarisation for a desired operation
Bismuth (Bi) based alloys such as GaBiNAs, InGaBiAs, etc. offer large spin-orbit coupling. Can we realize highly efficient telecomm wavelength devices from bismides that would offer reduced temperature sensitivity and suppressed Auger losses?
Understanding and resolving the efficiency impeding mechanisms in nano-material based photovoltaics to realize sustainable, economical, efficient, and green energy solutions.
My theory and modeling work is based on the following methods:
Strain relaxation based on atomistic valence force field method.
Electronic structure calculations based on sp3d5s*/sp3s* tight-binding method, k.p model, density functional theory, or some hybrid of these methods.
Interband optical transition strengths from the Fermi's Golden rule.
Linear and quadratic piezoelectric potentials by solving the Poisson's equation.