Controllable double tunneling induced optical soliton storage in linear triple quantum dot molecules

We propose an asymmetric linear triple quantum dot molecule model for a recent experimental device with a double neighboring dot-dot tunneling coupling, of which the linear and nonlinear dynamical properties are analytically studied by using an amplitude variable approach combined with multi-scale m...

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Bibliographic Details
Published in:The European physical journal. D, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2020-09, Vol.74 (9), Article 190
Main Authors: Wang, Yin, Ding, Jianwen, Wang, Denglong
Format: Article
Language:English
Subjects:
Applications of Nonlinear Dynamics and Chaos Theory
Atomic
Coupling
Coupling (molecular)
Molecular
Multiscale analysis
Nonlinear analysis
Optical and Plasma Physics
Physical Chemistry
Physics
Physics and Astronomy
Propagation velocity
Quantum dots
Quantum Information Technology
Quantum Physics
Regular Article
Solitary waves
Spectroscopy/Spectrometry
Spintronics
Stability
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Summary:We propose an asymmetric linear triple quantum dot molecule model for a recent experimental device with a double neighboring dot-dot tunneling coupling, of which the linear and nonlinear dynamical properties are analytically studied by using an amplitude variable approach combined with multi-scale method. It is shown that double transparency windows are formed by the double tunneling coupling. Both dark and bright optical solitons are then obtained, of which both the types and the propagating velocity can be controlled by the two tunneling coupling strengths. Interestingly, the propagating velocity of the solitons can approach to zero at certain tunneling coupling strengths, the motionless optical solitons appearing there. The results indicate potential applications of the semiconductor quantum devices for optical soliton storage. Graphical abstract
ISSN:1434-6060
1434-6079
DOI:10.1140/epjd/e2020-100537-x