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Updated: Aug 15, 2026

NMR 15N Relaxation Experiments for the Investigation of Picosecond to Nanoseconds Structural Dynamics of Proteins
Published on: November 1, 2024
Nonlinearly induced relaxation to the ground state in a two-level system
D Mandelik1, Y Lahini, Y Silberberg
1Department of Physics of Complex Systems, the Weizmann Institute of Science, Rehovot, Israel.
Abstract:
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.
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