Superballistic growth of the variance of optical wave packets Stützer, S. ; Kottos, T. ; Tünnermann, A. ; Nolte, S. ; Christodoulides, D. N. ; Szameit, A. Abstract Publication: Optics Letters Pub Date: November 2013 DOI: 10.1364/OL.38.004675 Bibcode: 2013OptL...38.4675S