Erlangen 2018 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 41: Poster Session IIIa
A 41.16: Poster
Donnerstag, 8. März 2018, 16:15–18:15, Orangerie
Rydberg atoms in frustrated optical lattices: numerical study of quantum phases emerging due to the long-range interaction — •Jaromir Panas1, Andreas Geissler1, Yongqiang Li2, Weibin Li3, and Walter Hofstetter1 — 1Goethe-Universität, 60438 Frankfurt am Main, Germany — 2National University of Defence Technology, 410073 Changsha, P. R. China — 3University of Nottingham, NG7 2RD Nottingham, United Kingdom
Recent experiments with ultracold Rydberg atoms have shown that the long-range interactions can give rise to spatially ordered structures. It seems that observation of such crystalline phases in a system with Rydberg atoms loaded into optical lattices is also within reach. For such a setup, theoretical studies have predicted a rich phase diagram. In particular, the existence of a series of supersolid and density wave phases with different spatial ordering has been shown for Rydberg atoms in a square lattice. Here we present results of numerical calculations performed for long-range interacting bosons in a triangular lattice. To find the relevant ordering structures, the "frozen"-gas approximation for a deep lattice potential is used. These structures are then investigated using the real-space bosonic dynamical mean-field theory.