409 citations · 1.2k across the 34 of their papers we have counts for
24 papers · 1 filter
Clustered Superfluids in the One Dimensional Bose-Hubbard model with extended correlated hopping
Julia Stasińska, Omjyoti Dutta, Luca Barbiero +2
Bosonic lattice systems with non-trivial interactions represent an intriguing platform to study exotic phases of matter. Here, we study the effects of extended correlated hopping p…
Effects of extended correlated hopping in a bose-bose mixture
Julia Stasińska, Ravindra W. Chhajlany, Omjyoti Dutta +1
We study the effects of assisted tunneling or correlated hopping between next nearest neighbours in a two species Bose-Hubbard system. The system is the bosonic analong of the ferm…
Ferroelectric nano-traps for polar molecules
Omjyoti Dutta, Geza Giedke
We propose and analyze an electrostatic-optical nano-scale trap for cold diatomic polar molecules. The main ingredient of our proposal is an square-array of ferroelectric nano-rods…
Synthetic Random Flux Model in a periodically-driven optical lattice
Jan Major, Marcin Płodzień, Omjyoti Dutta +1
We propose a realization of a synthetic Random Flux Model in a two-dimensional optical lattice. Starting from Bose-Hubbard Hamiltonian for two atom species we show how to use fast-…
Toolbox for Abelian lattice gauge theories with synthetic matter
Omjyoti Dutta, Luca Tagliacozzo, Maciej Lewenstein +1
Fundamental forces of Nature are described by field theories, also known as gauge theories, based on a local gauge invariance. The simplest of them is quantum electrodynamics (QED)…
Topological Rice-Mele model in an emergent lattice: Exact diagonalization approach
Krzysztof Biedroń, Omjyoti Dutta, Jakub Zakrzewski
Using exact diagonalization methods we study possible phases in a one dimensional model of two differently populated fermionic species in a periodically driven optical lattice. The…
Hidden string order in a hole-superconductor with extended correlated hopping
Ravindra W. Chhajlany, Przemysław R. Grzybowski, Julia Stasińska +2
Ultracold fermions in a one-dimensional, spin-dependent, optical lattice are described by a non-standard Hubbard model with next-nearest-neighbour correlated hopping. Periodic driv…
Bose-Hubbard model with random impurities: Multiband and nonlinear hopping effects
Julia Stasińska, Mateusz Łącki, Omjyoti Dutta +2
We investigate the phase diagrams of theoretical models describing bosonic atoms in a lattice in the presence of randomly localized impurities. By including multiband and nonlinear…
Rice-Mele model with topological solitons in an optical lattice
Anna Przysiezna, Omjyoti Dutta, Jakub Zakrzewski
Attractive ultra-cold fermions trapped in a one-dimensional periodically shaken opticla lattices are considered. For an appropriate resonant shaking the system realizes paradigmati…
Non-standard Hubbard models in optical lattices: a review
Omjyoti Dutta, Mariusz Gajda, Philipp Hauke +5
Originally, the Hubbard model has been derived for describing the behaviour of strongly-correlated electrons in solids. However, since over a decade now, variations of it are also…
Spontaneous magnetization and anomalous Hall effect in an emergent Dice lattice
Omjyoti Dutta, Anna Przysiezna, Jakub Zakrzewski
Ultracold atoms in optical lattices serve as a tool to model different physical phenomena appearing originally in condensed matter. To study magnetic phenomena one needs to enginee…
Many body population trapping in ultracold dipolar gases
O. Dutta, M. Lewenstein, J. Zakrzewski
A system of interacting dipoles is of paramount importance for understanding of many-body physics. The interaction between dipoles is {\it anisotropic} and {\it long-range}. While…
Density dependent tunneling in the extended Bose-Hubbard model
Michal Maik, Philipp Hauke, Omjyoti Dutta +2
Recently, it has become apparent that, when the interactions between polar molecules in optical lattices becomes strong, the conventional description using the extended Hubbard mod…
Tunneling-Induced Restoration of the Degeneracy and the Time-Reversal Symmetry Breaking in Optical Lattices
Tomasz Sowiński, Mateusz Łacki, Omjyoti Dutta +5
We study the ground-state properties of bosons loaded into the -band of a one dimensional optical lattice. We show that the phase diagram of the system is substantially affected…
Criticality in the Bose-Hubbard model with three-body repulsion
Tomasz Sowiński, Ravindra W. Chhajlany, Omjyoti Dutta +2
We study the attractive Bose-Hubbard model with a tunable, on-site three-body constraint. It is shown that the critical behavior of the system undergoing a phase transition from pa…
Nanoplasmonic planar traps - a tool for engineering p-wave interactions
B. Juliá-Díaz, T. Graß, O. Dutta +2
Engineering strong p-wave interactions between fermions is one of the challenges in modern quantum physics. Such interactions are responsible for a plethora of fascinating quantum…
Emergent non-trivial lattices for topological insulators
O. Dutta, A. Przysiezna, M. Lewenstein
Materials with non-trivial lattice geometries allow for the creation of exotic states of matter like topologically insulating states. Therefore searching for such materials is an i…
Spontaneous time-reversal symmetry breaking for spinless fermions on a triangular lattice
Olivier Tieleman, Omjyoti Dutta, Maciej Lewenstein +1
As a minimal fermionic model with kinetic frustration, we study a system of spinless fermions in the lowest band of a triangular lattice with long-range repulsion. We find that the…
Quantum spin models with long-range interactions and tunnelings: A quantum Monte Carlo study
Michal Maik, Philipp Hauke, Omjyoti Dutta +2
We use a quantum Monte Carlo method to investigate various classes of 2D spin models with long-range interactions at low temperatures. In particular, we study a dipolar XXZ model w…
Orbital physics of polar Fermi molecules
O. Dutta, T. Sowiński, M. Lewenstein
We study a system of polar dipolar fermions in a two-dimensional optical lattice and show that multi-band Fermi-Hubbard model is necessary to discuss such system. By taking into ac…
Dipolar Molecules in Optical Lattices
Tomasz Sowiński, Omjyoti Dutta, Philipp Hauke +2
We study the extended Bose--Hubbard model describing an ultracold gas of dipolar molecules in an optical lattice, taking into account all on-site and nearest-neighbor interactions,…
Bose-Hubbard model with occupation dependent parameters
Omjyoti Dutta, Andre Eckardt, Philipp Hauke +2
We study the ground-state properties of ultracold bosons in an optical lattice in the regime of strong interactions. The system is described by a non-standard Bose-Hubbard model wi…
Unconventional superfluidity of fermions in Bose-Fermi mixtures
O. Dutta, M. Lewenstein
We examine two dimensional mixture of single-component fermions and dipolar bosons. We calculate the self-enregies of the fermions in the normal state and the Cooper pair channel b…
Unconventional superfluidity in Bose-Fermi Mixtures
O. Dutta, M. Lewenstein
Pairing between fermions that attract each other, reveal itself to the macroscopic world in the form of superfluidity. Since the discovery of fermionic superfluidity, intense searc…