Berlin 2014 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 34: Poster: Ultra-cold atoms, ions and BEC (with Q)

A 34.17: Poster

Mittwoch, 19. März 2014, 16:30–18:30, Spree-Palais

The Dynamics of Few-body Dipolar Bosons in the One-dimensional Optical Lattices — •Xiangguo Yin, Lushuai Cao, and Peter Schmelcher — Zentrum für Optische Quantentechnologien, Luruper Chaussee 149, D-22761 Hamburg, Germany

Based on the Multilayer Multi-Configuration Time Dependent Hatree method for bosons, We investigate the dynamics of one-dimensional few-body system composed of bosons with strong dipolar interaction in optical lattices. For the ground state of N bosons in 2N-1 wells, each boson occupies single well without particles in the nearest well, which is like crystal state in solid physics and named crystal-like state. For the ground state of N bosons in 3N-1 wells, each boson occupies two adjacent wells and there is one unoccupied well between each bosons, which is like supersolid state and named supersolid-like state. These two kinds of ground states are set as the initial state and two kinds of local driven potential are taken on one well of optical lattices, including asymmetric tilt potential and symmetric step potential. The vibration, driven by tilt potential, would be transfered from one side to the other side of optical lattices for crystal-like state. While for supersolid-like state, both of driven potential can cause the tunneling of the first particle in two adjacent wells with different amplitude and frequency and the correction induced tunneling of the other particles. However, the frequency of latter tunneling is independent on the shape and amplitude of driven potential.