Soliton eigenvalue control with optical lattices
  We address the dynamics of higher-order solitons in optical lattices, and predict their self-splitting into the set of their single-soliton constituents. The splitting is induced by the potential introduced by the lattice, together with the imprinting of a phase tilt onto the initial multisoliton states. The phenomenon allows the controllable generation of several coherent solitons linked via their Zakharov-Shabat eigenvalues. Application of the scheme to the generation of correlated matter waves in Bose-Einstein condensates is discussed. 
Yaroslav V. Kartashov, Lucian-Cornel Crasovan, Anna S. Zelenina,   Victor A. Vysloukh, Anna Sanpera, Maciej Lewenstein, Llui...