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Coherent Wave Propagation in Multimode Systems with Correlated Noise
Yaxin Li1, Doron Cohen2, Tsampikos Kottos1
1Wave Transport in Complex Systems Lab, Physics Department, Wesleyan University, Middletown Connecticut 06459, USA.
Disorder in multimode systems causes mode mixing. We show short-scale coherent dynamics can control long-scale excitation spread, revealing a universal crossover in decay. This impacts wave physics applications.
Area of Science:
- Wave physics
- Optics
- Quantum mechanics
Background:
- Imperfections in multimode systems cause mode mixing and interference.
- Disorder is characterized by correlation time or length.
Purpose of the Study:
- To investigate how short-scale coherent dynamics influence long-scale excitation spread in multimode systems.
- To unveil universal decay behaviors in mode dynamics.
Main Methods:
- Analysis of excitation dynamics in mode space.
- Modeling of coherent short-scale dynamics and their effect on long-scale evolution.
Main Results:
- Demonstration that short-scale coherent dynamics can tailor long-scale excitation spread.
- Unveiling a universal crossover from exponential to power-law ballisticlike decay of the initial mode.
Conclusions:
- Short-scale dynamics offer a control mechanism for wave propagation in disordered multimode systems.
- Findings have broad applications in fiber optics, quantum dots, and quantum biology.
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