Observation of Non-equilibrium Motion and Equilibration in Polariton Rings
| Autor: | Andrew J. Daley, Shouvik Mukherjee, R. G. Lena, Burcu Ozden, Mark Steger, David W. Snoke, Zheng Sun, Loren Pfeiffer, Kenneth D. West, Jonathan Beaumariage, D. M. Myers |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Physics
Condensed Matter::Quantum Gases Condensed Matter::Other Condensation Dynamics (mechanics) Non-equilibrium thermodynamics Motion (geometry) Physics::Optics FOS: Physical sciences 02 engineering and technology Photon energy 021001 nanoscience & nanotechnology Ring (chemistry) 01 natural sciences Molecular physics Quantum Gases (cond-mat.quant-gas) 0103 physical sciences Polariton Condensed Matter - Quantum Gases 010306 general physics 0210 nano-technology Excitation QC |
| ISSN: | 2469-9950 |
| DOI: | 10.48550/arxiv.1901.05608 |
| Popis: | We present a study of the macroscopic dynamics of a polariton condensate formed by non-resonant optical excitation in a quasi-one-dimensional ring-shaped microcavity. The presence of a gradient in the cavity photon energy creates a macroscopic trap for the polaritons in which a single mode condensate is formed. With time- and energy-resolved imaging we show the role of interactions in the motion of the condensate as it undergoes equilibration in the ring. These experiments also give a direct measurement of the polariton-polariton interaction strength above the condensation threshold. Our observations are compared to the open-dissipative one-dimensional Gross-Pitaevskii equation which shows excellent qualitative agreement. Comment: Revised manuscript for Phys Rev. B submission |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|