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Role of nonlocality and Landau damping in the dynamics of a quantum dot coupled to surface plasmons

Title data

Vagov, Alexei ; Larkin, I. A. ; Croitoru, Mikhail D. ; Axt, Vollrath M.:
Role of nonlocality and Landau damping in the dynamics of a quantum dot coupled to surface plasmons.
In: Physical Review B. Vol. 93 (2016) Issue 19 . - Art.Nr. 195414, 15 S..
ISSN 0163-1829
DOI: https://doi.org/10.1103/PhysRevB.93.195414

Project information

Project financing: 7. Forschungsrahmenprogramm für Forschung, technologische Entwicklung und Demonstration der Europäischen Union
Supported by the Foundation for Science and Technology (FCT, Portugal) and the Belgian Science Policy (BELSPO Back to Belgium Grant).

Abstract in another language

We investigate the dynamics of a quantum emitter (quantum dot) placed in the vicinity of a flat metal surface. The dynamics is induced by the coupling between the emitter and surface plasmon-polaritons. The plasmon-polariton modes are described within a continuous media model with a nonlocal Lindhard-type dielectric response of the metal. The analytic solution of the dynamical equations is obtained in the rotating wave approximation. The results demonstrate a considerable influence of the nonlocality of the electromagnetic response and the Landau damping in the metal. In particular, the relaxation dynamics is characterized by two distinct times that may differ by large amounts as a consequence of the nonlocality of the response. It is also shown that one of the contributions to the relaxation can have a power-law long-time asymptote, leading to notable changes in the dynamical pattern.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: plasmonics; surface plasmon polaritons; quantum dot; nonlocal dielectric response; Landau damping; exciton relaxation; ultrafast dynamics
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Theoretical Physics III > Chair Theoretical Physics III - Univ.-Prof. Dr. Martin Axt
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Theoretical Physics III
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 06 Nov 2017 12:26
Last Modified: 06 Nov 2017 12:26
URI: https://eref.uni-bayreuth.de/id/eprint/40291