Entanglement-assisted tunneling dynamics of impurities in a double well immersed in a bath of lattice trapped bosons
| Autor: | Peter Schmelcher, Kevin Keiler, Friethjof Theel, Simeon Mistakidis |
|---|---|
| Přispěvatelé: | Zentrum für Optische Quantentechnologien | Center for Optical Quantum Technologies [Hamburg] (ZOQ), Universität Hamburg (UHH) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Coupling
Physics Condensed Matter::Quantum Gases [PHYS]Physics [physics] Optical lattice Condensed matter physics FOS: Physical sciences General Physics and Astronomy Quantum entanglement Condensed Matter::Mesoscopic Systems and Quantum Hall Effect 01 natural sciences 010305 fluids & plasmas 3. Good health Quantum Gases (cond-mat.quant-gas) Impurity Lattice (order) Condensed Matter::Superconductivity 0103 physical sciences Interspecies interaction 010306 general physics Condensed Matter - Quantum Gases Quantum tunnelling ComputingMilieux_MISCELLANEOUS Boson |
| Zdroj: | New Journal of Physics New Journal of Physics, Institute of Physics: Open Access Journals, 2020, 22 (2), pp.023027. ⟨10.1088/1367-2630/ab6eab⟩ |
| ISSN: | 1367-2630 |
| DOI: | 10.1088/1367-2630/ab6eab⟩ |
| Popis: | We unravel the correlated tunneling dynamics of an impurity trapped in a double well and interacting repulsively with a majority species of lattice trapped bosons. Upon quenching the tilt of the double well it is found that the quench-induced tunneling dynamics depends crucially on the interspecies interaction strength and the presence of entanglement inherent in the system. In particular, for weak couplings the impurity performs a rather irregular tunneling process in the double well. Increasing the interspecies coupling it is possible to control the response of the impurity which undergoes a delayed tunneling while the majority species effectively acts as a material barrier. For very strong interspecies interaction strengths the impurity exhibits a self-trapping behaviour. We showcase that a similar tunneling dynamics takes place for two weakly interacting impurities and identify its underlying transport mechanisms in terms of pair and single-particle tunneling processes. 19 pages, 13 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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