Non-Hermitian Kibble-Zurek mechanism with tunable complexity in single-photon interferometry
| Autor: | Markus Heyl, Balázs Dóra, Peng Xue, Lei Xiao, Jin-Yu Dai, Roderich Moessner, Dengke Qu, Kunkun Wang, Hao-Wei Li, Wei Yi |
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| Rok vydání: | 2020 |
| Předmět: |
Physics
Kibble-Zurek mechanism Scaling law Quantum Physics Photon Exceptional point Strongly Correlated Electrons (cond-mat.str-el) General Engineering FOS: Physical sciences 01 natural sciences Hermitian matrix 010305 fluids & plasmas Interferometry Condensed Matter - Strongly Correlated Electrons Phase transitions and critical phenomena Quantum Gases (cond-mat.quant-gas) Quantum mechanics 0103 physical sciences General Earth and Planetary Sciences ddc:530 010306 general physics Condensed Matter - Quantum Gases Quantum Physics (quant-ph) General Environmental Science |
| Zdroj: | PRX Quantum |
| DOI: | 10.48550/arxiv.2004.05928 |
| Popis: | Non-Hermitian descriptions of quantum matter have seen impressive progress recently, with major advances in understanding central aspects such as their topological properties or the physics of exceptional points, the non-Hermitian counterpart of critical points. Here, we use single-photon interferometry to reconstruct the non-Hermitian Kibble-Zurek mechanism and its distinct scaling behavior for exceptional points, by simulating the defect production upon performing slow parameter ramps. Importantly, we are able to realise also higher-order exceptional points, providing experimental access to their theoretically predicted characteristic Kibble-Zurek scaling behaviour. Our work represents a crucial step in increasing the experimental complexity of non-Hermitian quantum time-evolution. It thus also furthers the quest to move the frontier from purely single-particle physics towards increasingly complex settings in the many-body realm. Comment: 8 pages, 6 figures |
| Databáze: | OpenAIRE |
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