Hannover 2013 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
Q: Fachverband Quantenoptik und Photonik
Q 56: Poster III
Q 56.87: Poster
Donnerstag, 21. März 2013, 16:00–18:30, Empore Lichthof
Fractional quantum Hall physics for Rydberg-dressed atoms in artificial magnetic fields — Fabian Grusdt1,2 and •Michael Fleischhauer1 — 1Department of Physics and research center OPTIMAS, University of Kaiserslautern, Germany — 2Graduate School Materials Science in Mainz, Staudinger Weg 9, 55128 Mainz, Germany
We study ultracold Rydberg-dressed Bose gases in the lowest Landau level (LLL) generated by artificial gauge fields. The characteristics of the Rydberg interaction gives rise to interesting many-body ground states different from standard LLL fractional quantum Hall physics. The non-local but rapidly decreasing interaction potential favors crystalline ground states for very dilute systems. While a simple Wigner crystal becomes energetically favorable compared to the Laughlin liquid for filling fractions ν<1/12, a correlated crystal of composite particles emerges already for ν ≤ 1/6. The presence of a new length scale, the Rydberg blockade radius aB, gives rise to a bubble crystal phase when the average particle distance becomes less than aB and ν≲ 1/4. For larger fillings indications for strongly correlated, non-Abelian cluster liquids are found.