Signatures of bath-induced quantum avalanches in a many-body--localized system
| Autor: | Léonard, Julian, Kim, Sooshin, Rispoli, Matthew, Lukin, Alexander, Schittko, Robert, Kwan, Joyce, Demler, Eugene, Sels, Dries, Greiner, Markus |
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| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Nature Physics 19, 481-485 (2023) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1038/s41567-022-01887-3 |
| Popis: | Strongly correlated systems can exhibit surprising phenomena when brought in a state far from equilibrium. A spectacular example are quantum avalanches, that have been predicted to run through a many-body--localized system and delocalize it. Quantum avalanches occur when the system is locally coupled to a small thermal inclusion that acts as a bath. Here we realize an interface between a many-body--localized system and a thermal inclusion of variable size, and study its dynamics. We find evidence for accelerated transport into the localized region, signature of a quantum avalanche. By measuring the site-resolved entropy we monitor how the avalanche travels through the localized system and thermalizes it site by site. Furthermore, we isolate the bath-induced dynamics by evaluating multipoint correlations between the bath and the system. Our results have fundamental implications on the robustness of many-body--localized systems and their critical behavior. Comment: 5+2 pages, 4 figures |
| Databáze: | arXiv |
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