Control of anomalous diffusion of a Bose polaron-Reference-Cited by-同舟云学术

Control of anomalous diffusion of a Bose polaron

Published:2020-02-20 Issue: Volume:4 Page:232
ISSN:2521-327X
Container-title:Quantum
language:en
Short-container-title:Quantum

Author:

Charalambous Christos¹^ORCID,García-March Miguel Ángel¹²^ORCID,Muñoz-Gil Gorka¹^ORCID,Grzybowski Przemysław Ryszard³^ORCID,Lewenstein Maciej¹⁴^ORCID

Affiliation:

1. ICFO – Institut de Ciéncies Fotóniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels (Barcelona), Spain

2. Instituto Universitario de Matemática Pura y Aplicada, Universitat Politècnica de València, E-46022 València, Spain

3. Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

4. ICREA, Lluis Companys 23, E-08010 Barcelona, Spain

Abstract

We study the diffusive behavior of a Bose polaron immersed in a coherently coupled two-component Bose-Einstein Condensate (BEC). We assume a uniform, one-dimensional BEC. Polaron superdiffuses if it couples in the same manner to both components, i.e. either attractively or repulsively to both of them. This is the same behavior as that of an impurity immersed in a single BEC. Conversely, the polaron exhibits a transient nontrivial subdiffusive behavior if it couples attractively to one of the components and repulsively to the other. The anomalous diffusion exponent and the duration of the subdiffusive interval can be controlled with the Rabi frequency of the coherent coupling between the two components, and with the coupling strength of the impurity to the BEC.

Publisher

Verein zur Forderung des Open Access Publizierens in den Quantenwissenschaften

Subject

Physics and Astronomy (miscellaneous),Atomic and Molecular Physics, and Optics

Link

https://quantum-journal.org/papers/q-2020-02-20-232/pdf/

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