83 citations · 326 across the 11 of their papers we have counts for
11 papers
Spatial two-particle NOON-states in periodically shaken three-well potentials
Kirsten Stiebler, Bettina Gertjerenken, Niklas Teichmann +1
Few-particle dynamics in a three-well potential are investigated numerically. It is shown that periodically shaking the potential can considerably increase the fidelity of emerging…
Fractional photon-assisted tunneling in an optical superlattice: large contribution to particle transfer
Martin Esmann, Niklas Teichmann, Christoph Weiss
Fractional photon-assisted tunneling is investigated both analytically and numerically for few interacting ultra-cold atoms in the double-wells of an optical superlattice. This can…
Reproducible mesoscopic superpositions of Bose-Einstein condensates and mean-field chaos
Bettina Gertjerenken, Stephan Arlinghaus, Niklas Teichmann +1
In a parameter regime for which the mean-field (Gross-Pitaevskii) dynamics becomes chaotic, mesoscopic quantum superpositions in phase space can occur in a double-well potential wh…
Scaling property of the critical hopping parameters for the Bose-Hubbard model
Niklas Teichmann, Dennis Hinrichs
Recently precise results for the boundary between the Mott insulator phase and the superfluid phase of the homogeneous Bose-Hubbard model have become available for arbitrary intege…
Fractional photon-assisted tunneling for Bose-Einstein condensates in a double well
Niklas Teichmann, Martin Esmann, Christoph Weiss
Half-integer photon-resonances in a periodically shaken double well are investigated on the level of the N-particle quantum dynamics. Contrary to non-linear mean-field equations, t…
Process chain approach to the Bose-Hubbard model: Ground-state properties and phase diagram
Niklas Teichmann, Dennis Hinrichs, Martin Holthaus +1
We carry out a perturbative analysis, of high order in the tunneling parameter, of the ground state of the homogeneous Bose-Hubbard model in the Mott insulator phase. This is made…