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Polaritonic Rabi and Josephson Oscillations
Amir Rahmani1, Fabrice P Laussy2,3
1Physics Department, Yazd University, P.O. Box 89195-741, Yazd, Iran.
Scientific Reports
|July 26, 2016
Summary
We unify the dynamics of coupled condensates, including polaritons, by considering detuning, interactions, and finite lifetimes. This reveals new behaviors in the Josephson effect, like phase dynamics and self-trapping.
Area of Science:
- Quantum physics
- Condensed matter physics
- Optics
Background:
- Coupled condensates are crucial in diverse fields like superconductivity and Bose-Einstein condensates (BECs).
- Understanding their dynamics is key to various physical phenomena.
Purpose of the Study:
- To present a unified framework for coupled condensate dynamics.
- To investigate the influence of detuning, self-interaction, and finite lifetimes.
- To explore these dynamics in the context of polaritons.
Main Methods:
- Analysis of free energy detuning, self-interaction strengths, and mode lifetimes.
- Stability analysis of fixed points on a normalized Bloch sphere.
- Generalized criterion for identifying Rabi and Josephson regimes.
Main Results:
- The study reveals significant alterations to the Josephson effect, including phase behavior (running/oscillating) and self-trapping.
- A unified picture incorporating detuning, interactions, and decay is established.
- Specific relevance to polariton dynamics, considering their unique properties (short-lived, material interaction, detuning).
Conclusions:
- The findings offer a comprehensive understanding of coupled condensate dynamics, particularly for polaritons.
- The generalized criterion aids in distinguishing Rabi and Josephson regimes under realistic conditions.
- This work provides essential insights into the complex behavior of quantum systems.
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