Coherent interaction between two exciton-phonon solitons due to Bose-Einstein condensation

E. Benson (1) , E. Fortin (1) , Bernard Prade (2) , André Mysyrowicz (2)

1 Department of Physics [Ottawa]
2 LOA - Laboratoire d'optique appliquée

Nonlinear interaction between two soliton pulses consisting of exciton-phonon coherent fields is observed after propagation in Cu2O. Each soliton is formed independently by random photocreation of hot excitons followed by rapid cooling and Bose-Einstein condensation. The positive interference appears with a delay attributed to the build-up of a common phase for the wavefunctions.

Mots clés: excitons

Domaines: Optique [physics.optics]

E. Benson, E. Fortin, Bernard Prade, André Mysyrowicz. Coherent interaction between two exciton-phonon solitons due to Bose-Einstein condensation. EPL - Europhysics Letters, 1997, 40 (3), pp.311. ⟨10.1209/epl/i1997-00458-0⟩. ⟨hal-00465607⟩