Propagation of quantum correlations after a quench in the Mott-insulator regime of the Bose-Hubbard model Konstantin V Krutitsky, Patrick Navez, Friedemann Queisser and Ralf Schützhold EPJ Quantum Technol., 1 1 (2014) 12 Published online: 03 September 2014 DOI: 10.1140/epjqt12