Dark polariton-solitons in semiconductor microcavities
  We report the existence, symmetry breaking and other instabilities of dark polariton-solitons in semiconductor microcavities operating in the strong coupling regime. These half-light half-matter solitons are potential candidates for applications in all-optical signal processing. Their excitation time and required pump powers are a few orders of magnitude less than those of their weakly coupled light-only counterparts. 
A.V. Yulin, O.A. Egorov, F. Lederer, and D.V. Skryabin