Observation of Kardar-Parisi-Zhang universal scaling in two dimensions
Fuente:
arXiv
Guardado en:
| Autores principales: | , , , , , , , , , , , , |
|---|---|
| Formato: | Preprint |
| Publicado: |
2025
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866918065424302080 |
|---|---|
| author | Widmann, Simon Dam, Siddhartha Düreth, Johannes Mayer, Christian G. Daviet, Romain Zelle, Carl Philipp Laibacher, David Emmerling, Monika Kamp, Martin Diehl, Sebastian Betzold, Simon Klembt, Sebastian Höfling, Sven |
| author_facet | Widmann, Simon Dam, Siddhartha Düreth, Johannes Mayer, Christian G. Daviet, Romain Zelle, Carl Philipp Laibacher, David Emmerling, Monika Kamp, Martin Diehl, Sebastian Betzold, Simon Klembt, Sebastian Höfling, Sven |
| contents | Equilibrium and nonequilibrium states of matter can exhibit fundamentally different behavior. A key example is the Kardar-Parisi-Zhang universality class in two spatial dimensions (2D KPZ), where microscopic deviations from equilibrium give rise to macroscopic scaling laws without equilibrium counterparts. While extensively studied theoretically, direct experimental evidence of 2D KPZ scaling has remained limited to interface growth so far. Here, we report the observation of universal scaling consistent with the KPZ universality class in 2D exciton-polariton condensates -- quantum fluids of light that are inherently driven and dissipative, thus breaking equilibrium conditions. Using momentum-resolved photoluminescence spectroscopy as well as space- and time-resolved interferometry, we probe the phase correlations across microscopically different systems, varying drive conditions in two distinct lattice geometries. Our analysis reveals correlation dynamics and scaling exponents in excellent agreement with 2D KPZ predictions. These results establish exciton-polariton condensates as a robust experimental platform for exploring 2D nonequilibrium universality quantitatively, and open new avenues for investigating the emergence of coherence in interacting quantum systems far from equilibrium. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_15521 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Observation of Kardar-Parisi-Zhang universal scaling in two dimensions Widmann, Simon Dam, Siddhartha Düreth, Johannes Mayer, Christian G. Daviet, Romain Zelle, Carl Philipp Laibacher, David Emmerling, Monika Kamp, Martin Diehl, Sebastian Betzold, Simon Klembt, Sebastian Höfling, Sven Quantum Physics Other Condensed Matter Optics Equilibrium and nonequilibrium states of matter can exhibit fundamentally different behavior. A key example is the Kardar-Parisi-Zhang universality class in two spatial dimensions (2D KPZ), where microscopic deviations from equilibrium give rise to macroscopic scaling laws without equilibrium counterparts. While extensively studied theoretically, direct experimental evidence of 2D KPZ scaling has remained limited to interface growth so far. Here, we report the observation of universal scaling consistent with the KPZ universality class in 2D exciton-polariton condensates -- quantum fluids of light that are inherently driven and dissipative, thus breaking equilibrium conditions. Using momentum-resolved photoluminescence spectroscopy as well as space- and time-resolved interferometry, we probe the phase correlations across microscopically different systems, varying drive conditions in two distinct lattice geometries. Our analysis reveals correlation dynamics and scaling exponents in excellent agreement with 2D KPZ predictions. These results establish exciton-polariton condensates as a robust experimental platform for exploring 2D nonequilibrium universality quantitatively, and open new avenues for investigating the emergence of coherence in interacting quantum systems far from equilibrium. |
| title | Observation of Kardar-Parisi-Zhang universal scaling in two dimensions |
| topic | Quantum Physics Other Condensed Matter Optics |
| url | https://arxiv.org/abs/2506.15521 |