A5017444437- Quantum and electron transport phenomena
- Semiconductor Quantum Structures and Devices
- Advanced Chemical Physics Studies
- Spectroscopy and Quantum Chemical Studies
- Quantum chaos and dynamical systems
- Quantum-Dot Cellular Automata
- Graphene research and applications
- 2D Materials and Applications
- Cold Atom Physics and Bose-Einstein Condensates
- Quantum, superfluid, helium dynamics
- Atomic and Molecular Physics
- Physics of Superconductivity and Magnetism
- Surface and Thin Film Phenomena
- Quantum Information and Cryptography
- Nonlinear Optical Materials Research
- Quantum Dots Synthesis And Properties
- Advanced Physical and Chemical Molecular Interactions
- Molecular Spectroscopy and Structure
- Advanced NMR Techniques and Applications
- Topological Materials and Phenomena
- Ga2O3 and related materials
- Superconducting Materials and Applications
- Chalcogenide Semiconductor Thin Films
- Advanced Fiber Laser Technologies
- Magnetic confinement fusion research
University of Delhi
2012-2023
Indian Association for the Cultivation of Science
2004-2008
Electronic structures of heavy-hole trions and He-isoelectronic ions show dependence on transitions among two-electron bound states constituted hydrogenic orbitals for which Coulomb (exchange) interaction causes nontrivial secular divergence to Schrödinger equation (SE). between a pair electrons triggers nonadiabatic due conical intersections larger vibrational amplitudes nuclei. Therefore, existing state-of-art theories ubiquitously urge analytical integrals multipoles electrostatic Green's...
Abstract A time‐dependent quantum adiabatic switching algorithm is exploited to determine the eigenstates of 2‐ D dots perturbed by a repulsive scatterer. Several forms functions are explored and optimal suggested. The paths compared for number states, using overlap, information entropy energy as descriptors possible identification function. © 2007 Wiley Periodicals, Inc. Int J Quantum Chem, 2008
Excitons in parabolically confined planar quantum dots with a transverse magnetic field have been studied various model systems. The correlations between e–h, e–e, and h–h incorporated terms of exact, simply elegant, absolutely terminating finite summed Lauricella functions which eliminate the secular divergence problem pave way for comprehensive understanding certain exotic phenomena two-dimensional regular irregular dots. A simple yet highly accurate exact variational wave function...
Two-dimensional superlattices, TMDCs and graphene family exhibit strong coulomb correlations among e–e, e–h, electron-phonon etc. As the number of electron increases, confining gate voltage transverse magnetic field are superseded by increasing interactions (N(N−1)/2 factors) that composes non-trivial Schrödinger equations. Representing such equations in Whittaker-M functions yields a modest alternate formalism, accommodates integrals (exchange) single-summed, finite exact Lauricella via...
(2020). Full-scale analytical perturbation calculation of He-isoelectronic series with Hydrogenic bound states via Green's function expansion (monopole) Coulomb interactions. Molecular Physics: Vol. 118, MQM 2019, e1770881.
We explore the pattern of evolution energy levels and wavefunctions in a harmonically confined single electron artificial atom 2 dimensions, presence perpendicular magnetic field anharmonic perturbations. A configuration interaction (CI) type approach basis appropriate harmonic oscillator eigenfunctions is used, leading to complex sparse hermitian matrix eigenvalue problem. show that for given strength confining potential descriptors like quantum information entropy, level spacing...
The linear and non-linear optical response properties of 2-D quantum dots with two interacting carrier electrons having triplet coupling spins are computed compared their singlet counterparts. significant dependence the on spin multiplicity in high low field regimes sought to be rationalized.
As the density of electrons (N=2, 3, 4, 5, 6, 7, 8,.) increases, complexity arises due to coulomb interactions, inclusion fermionic exchange symmetry and anisotropy. Consequently, Schrödinger equations anisotropic quantum dots become non-trivial. Recasting such non-relativistic into Whittaker-M basis functions unifies (exchange) correlation antisymmetric nature in two-centered integrals exact, finite, single-summed, terminated simplest Lauricella (F2) via multi-pole expansion subsequent...