Tunneling Control of Transmission Coefficient and Group Index in a Quantum Dot Nanostructure

Autor: Hamid Reza Hamedi, A. Khaledi-Nasab, H. Ghaforyan
Jazyk: angličtina
Rok vydání: 2014
Předmět:
Zdroj: Advances in Condensed Matter Physics, Vol 2014 (2014)
Druh dokumentu: article
ISSN: 1687-8108
1687-8124
DOI: 10.1155/2014/589415
Popis: We theoretically study the transmission and group index properties of the probe field in a four-level quantum dot molecule. It is found that the tunnel coupling plays a very important role in realizing the transmission coefficient of the probe field. Moreover, the impact of an incoherent pump field on imaginary part of susceptibility is investigated. We show that probe transmission exhibits oppositional behavior against weak and strong incoherent pump rates. This approach allows substantial flexibility in the manipulation of group velocity of light.
Databáze: Directory of Open Access Journals
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