Nonlinearly induced relaxation to the ground state in a two-level system.
We report the experimental demonstration of a nonlinear process in a two-level system, in which the amplitude of the excited state decays, transferring irreversibly a large fraction of its energy to the ground state, while shedding a part of it into radiation states. The experiments where preformed in a nonlinear optical waveguide, supporting two or three modes. The process is general, and is expected to occur in other nonlinear few level systems such as nonlinear quantum wells and Bose-Einstein condensates.
Mandelik
D
D
Department of Physics of Complex Systems, the Weizmann Institute of Science, Rehovot, Israel.
Lahini
Y
Y
Silberberg
Y
Y