447 citations · 1.9k across the 55 of their papers we have counts for
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Spin Orbit and Hyperfine Simulations with Two-Species Ultracold Atoms in a Ring
Allison Brattley, Tomáš Opatrný, Kunal K. Das
A collective spin model is used to describe two species of mutually interacting ultracold bosonic atoms confined to a toroidal trap. The system is modeled by a Hamiltonian that can…
Entangled Collective Spin States of Two Species Ultracold atoms in a Ring
Tomáš Opatrný, Kunal K. Das
We study the general quantum Hamiltonian that can be realized with two species of mutually interacting degenerate ultracold atoms in a ring-shaped trap, with the options of rotatio…
Criticality and Spin Squeezing in the Rotational Dynamics of a BEC on a Ring Lattice
Michal Kolář, Tomáš Opatrný, Kunal K. Das
We examine the dynamics of circulating modes of a Bose-Einstein condensate confined in toroidal lattice. Nonlinearity due to interactions leads to criticality that separates oscill…
Spin squeezing by tensor twisting and Lipkin-Meshkov-Glick dynamics in a toroidal Bose-Einstein condensate with spatially modulated nonlinearity
Tomáš Opatrný, Michal Kolář, Kunal K. Das
We propose a scheme for spin-squeezing in the orbital motion of a Bose-Einstein condensate (BEC) in a toroidal trap. A circular lattice couples two counter-rotating modes and squee…
An atomtronics transistor for quantum gates
Miroslav Gajdacz, Tomáš Opatrný, Kunal K. Das
We present a mechanism for quantum gates where the qubits are encoded in the population distribution of two component ultracold atoms trapped in a species-selective triple-well pot…
Transparent, Non-local, Species-selective Transport in an Optical Superlattice Containing Two Interacting Atom Species
Miroslav Gajdacz, Tomáš Opatrný, Kunal K. Das
In an optical superlattice of triple wells, containing two mutually interacting atom species in adjacent wells, we show that one species can be transported through the positions of…