Cold hybrid ion-atom systems

Ion-Atom Cold Collisions and Atomic Clocks

Fractional angular momentum in cold-atom systems.

The quantum statistics of bosons or fermions are manifest through the even or odd relative angular momentum of a pair. We show theoretically that, under certain conditions, a pair of certain test particles immersed in a fractional quantum Hall state possesses, effectively, a fractional relative angular momentum, which can be interpreted in terms of fractional braid statistics. We propose that t...

Cold Matter Assembled Atom-by-Atom

Manuel Endres, 2, ∗ Hannes Bernien, ∗ Alexander Keesling, ∗ Harry Levine, ∗ Eric R. Anschuetz, Alexandre Krajenbrink, † Crystal Senko, Vladan Vuletic, Markus Greiner, and Mikhail D. Lukin Department of Physics, Harvard University, Cambridge, MA 02138, USA Division of Physics, Mathematics and Astronomy, California Institute of Technology, Pasadena, CA 91125, USA Department of Physics and Researc...

Direct imaging of topological edge states in cold-atom systems.

Detecting topological order in cold-atom experiments is an ongoing challenge, the resolution of which offers novel perspectives on topological matter. In material systems, unambiguous signatures of topological order exist for topological insulators and quantum Hall devices. In quantum Hall systems, the quantized conductivity and the associated robust propagating edge modes--guaranteed by the ex...

Cold-atom scanning probe microscopy.

Scanning probe microscopes are widely used to study surfaces with atomic resolution in many areas of nanoscience. Ultracold atomic gases trapped in electromagnetic potentials can be used to study electromagnetic interactions between the atoms and nearby surfaces in chip-based systems. Here we demonstrate a new type of scanning probe microscope that combines these two areas of research by using ...