6 papers
Finite temperature spin dynamics of a two-dimensional Bose-Bose atomic mixture
Arko Roy, Miki Ota, Alessio Recati +1
We examine the role of thermal fluctuations in uniform two-dimensional binary Bose mixtures of dilute ultracold atomic gases. We use a mean-field Hartree-Fock theory to derive anal…
Design and characterization of a quantum heat pump in a driven quantum gas
Arko Roy, André Eckardt
We propose the implementation of a quantum heat pump with ultracold atoms. It is based on two periodically driven coherently coupled quantum dots using ultracold atoms. Each dot po…
Interacting bosons in two-dimensional lattices with localized dissipation
Arko Roy, Kush Saha
Motivated by the recent experiment [Takafumi Tomita \emph{et al.}, Sci. Adv. {\bf 3}, (2017)], we study the dynamics of interacting bosons in a two-dimensional optical lattice with…
Splitting of singly and doubly quantized composite vortices in two-component Bose-Einstein condensates
Pekko Kuopanportti, Soumik Bandyopadhyay, Arko Roy +1
We study numerically the dynamical instabilities and splitting of singly and doubly quantized composite vortices in two-component Bose-Einstein condensates harmonically confined to…
FACt: FORTRAN toolbox for calculating fluctuations in atomic condensates
Arko Roy, Sukla Pal, S. Gautam +2
We develop a FORTRAN code to compute fluctuations in atomic condensates (FACt) by solving the Bogoliubov-de Gennes (BdG) equations for two component Bose-Einstein condensate (TBEC)…
Mode bifurcation in the Rayleigh-Taylor instability of binary condensates
Arko Roy, S. Gautam, D. Angom
We examine the generation and subsequent evolution of Rayleigh Taylor instability in anisotropic binary Bose-Einstein condensates. Considering a pancake-shaped geometry, to initiat…