Time-delay polaritonics
| Autor: | Julian D. Töpfer, Pavlos G. Lagoudakis, Lucinda Pickup, Helgi Sigurdsson |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
FOS: Physical sciences
General Physics and Astronomy lcsh:Astrophysics 02 engineering and technology Fixed point 01 natural sciences Limit cycle lcsh:QB460-466 Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences Polaritonics Polariton Statistical physics 010306 general physics Microscale chemistry Condensed Matter::Quantum Gases Physics Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter::Other Equations of motion 021001 nanoscience & nanotechnology lcsh:QC1-999 Picosecond Phase space 0210 nano-technology lcsh:Physics |
| Zdroj: | Communications Physics, Vol 3, Iss 1, Pp 1-8 (2020) |
| ISSN: | 2399-3650 |
| DOI: | 10.1038/s42005-019-0271-0 |
| Popis: | Non-linearity and finite signal propagation speeds are omnipresent in nature, technologies, and real-world problems, where efficient ways of describing and predicting the effects of these elements are in high demand. Advances in engineering condensed matter systems, such as lattices of trapped condensates, have enabled studies on non-linear effects in many-body systems where exchange of particles between lattice nodes is effectively instantaneous. Here, we demonstrate a regime of macroscopic matter-wave systems, in which ballistically expanding condensates of microcavity exciton-polaritons act as picosecond, microscale non-linear oscillators subject to time-delayed interaction. The ease of optical control and readout of polariton condensates enables us to explore the phase space of two interacting condensates up to macroscopic distances highlighting its potential in extended configurations. We demonstrate deterministic tuning of the coupled-condensate system between fixed point and limit cycle regimes, which is fully reproduced by time-delayed coupled equations of motion similar to the Lang-Kobayashi equation. |
| Databáze: | OpenAIRE |
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