Lotka-Volterra population dynamics in coherent and tunable oscillators of trapped polariton condensates
| Autor: | Pavlos G. Lagoudakis, Julian D. Töpfer, Sergey Alyatkin, Helgi Sigurdsson |
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| Rok vydání: | 2020 |
| Předmět: |
Physics
Condensed Matter::Quantum Gases education.field_of_study Condensed Matter - Mesoscale and Nanoscale Physics Terahertz radiation Condensed Matter::Other Population Physics::Optics FOS: Physical sciences Trapping 01 natural sciences 010305 fluids & plasmas Quantum harmonic oscillator 0103 physical sciences Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Polariton Laser power scaling Atomic physics 010306 general physics education Excitation Coherence (physics) |
| DOI: | 10.48550/arxiv.2009.05637 |
| Popis: | We demonstrate a regime in which matter-wave condensates of exciton-polaritons trapped in an elliptically shaped two-dimensional potential appear as a coherent mixture of ground and first-excited state of the quantum harmonic oscillator. This system resembles an optically controllable two-level system and produces near terahertz harmonic oscillations of the condensate’s center of mass along the major axis of the elliptical trapping potential. The population ratio between the two trap levels is tunable through the excitation laser power and is shown to follow Lotka-Volterra dynamics. Furthermore, we demonstrate coherence formation between two spatially displaced trapped condensate oscillators - the polaritonic analogue of Huygen’s clock synchronization for coupled condensate oscillators. |
| Databáze: | OpenAIRE |
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