157 citations · 1.1k across the 83 of their papers we have counts for
9 papers · 1 filter
Atom Localization in two and three dimensions via level populations in an M-type atomic system
Nilesh Chaudhari, Amarendra K. Sarma
Schemes for two-dimensional (2D) and three-dimensional (3D) atomic states localization in a five level M-type system using standing-wave laser fields are presented. In the upper tw…
Nonlinear Parity-Time (PT) symmetric closed-form optical quadrimer waveguides: Attractor perspective
Samit Kumar Gupta, Jyoti Prasad Deka, Amarendra K. Sarma
We report a study on a closed-form nonlinear parity-time symmetric optical quadrimer waveguides system with a specific coupling scheme. The system yields power saturation behavior…
Three-level Λ-type atomic systems with a Pseudo-Hermitian PT-symmetric Hamiltonian
Amarendra K. Sarma, Balla Prannay
We have studied a three-level Λ-type atomic system with all the energy levels exhibiting decay. The system is described by a pseudo-Hermitian Hamiltonian and subject to certain con…
Optical trap potential control in N-type four level atoms by femtosecond Gaussian pulses
Subhadeep Chakraborty, Amarendra K. Sarma
In this work we present a scheme to control the optical dipole trap potential in an N-type four-level atomic system by using chirped femtosecond Gaussian pulses. The spatial size o…
High and uniform coherence creation in Doppler broadened double lambda-like atomic system by a train of femtosecond optical pulses
Amarendra K. Sarma, Pawan Kumar
We present a detailed analysis of coherence creation in a four level double lambda-like atomic system using a train of ultra-short few-cycle Gaussian pulses. The effect of the Dopp…
Modulation instability in nonlinear complex parity-time (PT) symmetric periodic structures
Amarendra K. Sarma
We carry out a modulation instability (MI) analysis in nonlinear complex parity-time (PT) symmetric periodic structures. All the three regimes defined by the PT-symmetry breaking p…