2 papers
cond-mat.quant-gas2019
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…
cond-mat.quant-gas2018
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…