28 citations · 105 across the 24 of their papers we have counts for
24 papers
Loss induced dynamics of optical pulses in saturable nonlinear media
Golam Ali Sekh
We consider pulse propagation in a saturable nonlinear coupler whose other arm is dissipative and other is transparent. A flow of energy from transparent to dissipative arm takes p…
Quantum droplets in dipolar quasi-one-dimensional Bose-Einstein condensates in optical lattices
Sk Siddik, Golam Ali Sekh
We consider quantum droplets in dipolar Bose-Einstein condensates embedded in optical lattices within the framework of Gross-Pitaevskii equations. In dipolar BECs, the long-range a…
Simulation of single-qubit gates in spin-orbit coupled Bose-Einstein condensate with cubic-quintic nonlinearity by nonlinear perturbations
Prithwish Ghosh, Kajal Krishna Dey, Golam Ali Sekh
We consider spin-orbit coupled Bose-Einstein condensates with cubic-quintic nonlinear interaction within the framework of second quantization formulation and find eigen states usin…
Dynamics of bright solitons in spin-orbit coupled Bose-Einstein condensates under the influence of optical and Rabi-coupling lattices
Sumaita Sultana, Sk Siddik, Golam Ali Sekh
We consider coupled matter-wave bright solitons in spatial coherence spin-orbit coupled Bose-Einstein condensates in optical and Rabi-coupling lattice potentials and find an effect…
Effective spin dynamics of spin-orbit coupled matter-wave solitons in optical lattices
Kajal Krishna Dey, Golam Ali Sekh
We consider matter-wave solitons in spin-orbit coupled Bose-Einstein condensates embedded in optical lattice and study dynamics of soliton within the framework of Gross-Pitaevskii…
Josephson effect and self-trapping in helicoidal spin-orbit coupled Bose-Einstein condensates with optical lattices
Sumaita Sultana, Golam Ali Sekh
We consider matter-wave bright solitons in helicoidal spin-orbit coupled Bose-Einstein condensates in optical lattices with a view to study Josephson-type oscillation and self-trap…
Fisher information on the phase transition from regular to flat top optical pulse in cubic-quintic nonlinear media
Bijan Layek, Sk. Siddik, Golam Ali Sekh
We study the properties of optical pulse in cubic-quintic nonlinear media using information theoretic approach. The system can support regular (sharp top) and flat top pulse depend…
Josephson-type oscillations in spin-orbit coupled Bose-Einstein condensates with nonlinear optical lattices
Sumaita Sultana, Golam Ali Sekh
We consider spin-orbit coupled Bose Einstein Condensate in presence of linear and nonlinear optical lattices within the framework of quasi-one-dimensional Gross-Pitaevskii equation…
Dynamical self-trapping of two-dimensional binary solitons in cross-combined linear and nonlinear optical lattices
K. K. Ismailov, G. A. Sekh, Mario Salerno
Dynamical and self-trapping properties of two-dimensional (2D) binary mixtures of Bose-Einstein condensates (BECs) in cross-combined lattices consisting of a one-dimensional (1D) l…
Compressing the atomic cloud in a matter-wave stripe soliton
Golam Ali Sekh, Benoy Talukdar
We consider an attractive quasi-one dimensional spin-orbit coupled Bose-Einstein condensate (SOC BEC) confined in a periodic potential produced by the combination of linear and non…
Satyendra Nath Bose: Quantum statistics to Bose-Einstein condensation
Golam Ali Sekh, Benoy Talukdar
Satyendra Nath Bose is one of the great Indian scientists. His remarkable work on the black body radiation or derivation of Planck's law led to quantum statistics, in particular, t…
Schwarzian derivative in higher-order Riccati equations
Benoy Talukdar, Supriya Chatterjee, Golam Ali Sekh
The Sturm-Liouville equation represents the linearized form of the first-order Riccati equation. This provides an evidence for the connection between Schwarzian derivative and this…
Information theoretic approach to effects of spin-orbit coupling in Bose-Einstein condensates
Golam Ali Sekh, Benoy Talukdar, Supriya Chatterjee +1
We make use of Shannon entropy () and Fisher information () to study the response of atomic density profiles of a spin-orbit coupled Bose-Einstein condensate to changes in th…
Optical solitons in saturable cubic-quintic nonlinear media with nonlinear dispersion
Sudipta Das, Kajal Krishna Dey, Golam Ali Sekh
We study an intense-short pulse propagation in a saturable cubic-quintic nonlinear media in the presence of nonlinear dispersion within the framework of an extended variational app…
Integrable systems: From the inverse spectral transform to zero curvature condition
Basir Ahamed Khan, Supriya Chatterjee, Golam Ali Sekh +1
This \textquoteleft research-survey' is meant for beginners in the studies of integrable systems. Here we outline some analytical methods for dealing with a class of nonlinear part…
Effects of optical lattices on bright solitons in spin-orbit coupled Bose-Einstein condensates
Golam Ali Sekh, Benoy Talukdar
The stationary bright solitons that appear in the ground state of the spin-orbit coupled Bose-Einstein condensate (SOC-BEC) exhibit nodes. We consider SOC-BEC in combined linear an…
Insights from intracules and Coulomb holes
Golam Ali Sekh, Benoy Talukdar, Supriya Chatterjee
We point out that a typical two-electron distribution function in atoms and molecules often called the intracule depends sensitively on the electron-electron repulsion which leads…
On the information entropy of matter-waves in quasi-disorder potentials
Kajal Krishna Dey, Sudipta Das, Golam Ali Sekh
We consider ultracold Bose gases in quasi-random potentials and quantify localization of matter waves by means of Shannon information entropy. We explicitly examine the role of qua…
Shannon entropies and Fisher information of K-shell electrons of neutral atoms
Golam Ali Sekh, Aparna Saha, Benoy Talukdar
We represent the two K-shell electrons of neutral atoms by Hylleraas-type wave function which fulfils the exact behavior at the electron-electron and electron-nucleus coalescence p…
Split and overlapped binary solitons in optical lattices
Golam Ali Sekh, Francesco V. Pepe, Paolo Facchi +2
We analyze the energetic and dynamical properties of bright-bright (BB) soliton pairs in a binary mixture of Bose-Einstein condensates subjected to the action of a combined optical…
Typical observables in a two-mode Bose system
Paolo Facchi, Saverio Pascazio, Francesco V. Pepe +1
A class of k-particle observables in a two-mode system of Bose particles is characterized by typicality: if the state of the system is sampled out of a suitable ensemble, an experi…
Phase randomization and typicality in the interference of two condensates
Paolo Facchi, Hiromichi Nakazato, Saverio Pascazio +3
Interference is observed when two independent Bose-Einstein condensates expand and overlap. This phenomenon is typical, in the sense that the overwhelming majority of wave function…
Displaced dynamics of binary mixtures in linear and nonlinear optical lattices
Golam Ali Sekh, Mario Salerno, Aparna Saha +1
The dynamical behavior of matter wave solitons of two-component Bose-Einstein condensates (BEC) in combined linear and nonlinear optical lattices (OLs) is investigated. In particul…
Effects of spatially inhomogeneous atomic interactions on Bose-Einstein condensates in optical lattices
Golam Ali Sekh
An interplay of optical lattices and nonlinear impurities in controlling the dynamics of Bose-Einstein condensate bright solitons is investigated using effective potential approach…