The nonlinear optical response of graphene has been studied by the newly developed technique which is an alternative to rotating wave approximation (RWA). This is referred to as asymptotic RWA (ARWA). is a single layer of ...

In the first work, we investigate the effect of spin on the mass outflow rates from a steady, advective, inviscid, geometrically thin accretion flow around a rotating black hole. For this purpose, we adopt pseudo- Kerr ...

Plasmonics and metamaterials have emerged as one of the most fascinating areas in photonics because of their significance in developing next generation miniaturized high speed components and sensitive devices. In the thesis ...

Despite several efforts, strongly correlated systems still pose as one of the most challenging conundrums in theoretical physics. The difficulty in modelling and solving the problems has grown even more after the discovery ...

Spectroscopy and stabilization of the laser at a particular transition is key in the modern area of atomic and optical physics. The present thesis details the mechanism of induced atomic coherence between multi-level ...

In this thesis, we have presentrd a comprehensive study of modeling point defects in high and low symmetry crystals with Polarizable Point Ion (PPI) model. We worked out an alternate scheme to estimating energies of point ...

Single beam optical trap comprises a tightly focused laser beam that exerts a pico-Newton level force on suspended microscopic particles. Since last couple of decades optical traps have become an important tool in areas ...

After the Higgs discovery, the Large Hadron Collider (LHC) did not find any evidence of new physics. Despite the Standard Model (SM) being “the” theory for the elementary particles, there are still many unanswered questions ...

Coherent control and manipulation of atoms is one of the central themes of research in atomic and optical physics owing to many potential applications including laser cooling, optical lattices, Bose-Einstein condensate, ...

Coherent control is a promising technique for manipulating atomic and molecular systems. It has found numerous applications in a wide range of areas such as, ultracold physics, laser cooling, Bose-Einstein condensates, ...