Creffield, Charles2023-06-202023-06-202007-031050-294710.1103/PhysRevA.75.031607https://hdl.handle.net/20.500.14352/51580©2007 The American Physical Society. The author acknowledges numerous stimulating discussions with Tania Monteiro. This work was supported by the EPSRC.We study the behavior of ultracold bosonic atoms held in an optical lattice. We first show how a self-trapping transition can be induced in the system either by increasing the number of atoms occupying a lattice site or by raising the interaction strength above a critical value. We then investigate how applying a periodic driving potential to the self-trapped state can be used to coherently control the emission of a precise number of correlated bosons from the trapping site. This allows the preparation and transport of entangled bosonic states, which are of great relevance to novel technologies such as quantum-information processing.engjournal articlehttp://dx.doi.org/10.1103/PhysRevA.75.031607http://journals.aps.orgopen access538.9Optical latticeMott insulatorFísica de materialesFísica del estado sólido2211 Física del Estado Sólido