281 citations · 281 across the 1 of their papers we have counts for
5 papers
Spin transport in a tunable Heisenberg model realized with ultracold atoms
Niklas Jepsen, Jesse Amato-Grill, Ivana Dimitrova +3
Simple models of interacting spins play an important role in physics. They capture the properties of many magnetic materials, but also extend to other systems, such as bosons and f…
High-precision analysis of Feshbach resonances in a Mott insulator
Thomas Secker, Jesse Amato-Grill, Wolfgang Ketterle +1
We show that recent high-precision measurements of relative on-site interaction energies in a Mott insulator require a theoretical description beyond the standard Hubbard-mode…
Enhanced Superexchange in a Tilted Mott Insulator
Ivana Dimitrova, Niklas Jepsen, Anton Buyskikh +4
In an optical lattice entropy and mass transport by first-order tunneling is much faster than spin transport via superexchange. Here we show that adding a constant force (tilt) sup…
Interaction Spectroscopy of a Two-component Mott Insulator
Jesse Amato-Grill, Niklas Jepsen, Ivana Dimitrova +2
We prepare and study a two-component Mott insulator of bosonic atoms with two particles per site. The mapping of this system to a magnetic spin model, and the subsequent study of i…
Optical forces arising from phase gradients
Yohai Roichman, Bo Sun, Yael Roichman +2
We demonstrate both theoretically and experimentally that gradients in the phase of a light field exert forces on illuminated objects, including forces transverse to the direction…