9 papers
Roton softening and supersolidity in Rb spinor condensates
R. W. Cherng, E. Demler
Superfluids with a tendency towards periodic crystalline order have both a phonon and roton like spectrum of collective modes. The softening of the roton spectrum provides one rout…
Spin-resolved spectra of Shiba multiplets from Mn impurities in MgB_2
Catalin Pascu Moca, Eugene Demler, Boldizsar Janko +1
We study the effect of magnetic Mn ions on the two-band superconductor MgB_2, and compute both the total and spin resolved scanning tunneling spectrum in the vicinity of the magnet…
Quantum Many-Body Dynamics of Coupled Double-Well Superlattices
Peter Barmettler, Ana Maria Rey, Eugene Demler +3
We propose a method for controllable generation of non-local entangled pairs using spinor atoms loaded in an optical superlattice. Our scheme iteratively increases the distance bet…
Time-resolved Observation and Control of Superexchange Interactions with Ultracold Atoms in Optical Lattices
S. Trotzky, P. Cheinet, S. Fölling +7
Quantum mechanical superexchange interactions form the basis of quantum magnetism in strongly correlated electronic media. We report on the direct measurement of superexchange inte…
Anyonic interferometry and protected memories in atomic spin lattices
Liang Jiang, Gavin K. Brennen, Alexey V. Gorshkov +5
Strongly correlated quantum systems can exhibit exotic behavior called topological order which is characterized by non-local correlations that depend on the system topology. Such s…
Quantum Spin Dynamics of Mode-Squeezed Luttinger Liquids in Two-Component Atomic Gases
Artur Widera, Stefan Trotzky, Patrick Cheinet +6
We report on the observation of the phase dynamics of interacting one-dimensional ultracold bosonic gases with two internal degrees of freedom. By controlling the non-linear atomic…