期刊
PHYSICS LETTERS A
卷 378, 期 3, 页码 219-225出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physleta.2013.10.043
关键词
Coherent population transfer; Asymmetric quantum dot molecule; Exciton; Electromagnetic field; Controlled rotation
资金
- European Union (European Social Fund - ESF)
- Greek national funds through the Operational Program Education and Lifelong Learning of the National Strategic Reference Framework (NSRF) - Research Funding Program: Archimedes III
We analyze the problem of coherent population transfer to the indirect exciton state in an asymmetric double semiconductor quantum dot molecule that interacts with an external electromagnetic field. Using the controlled rotation method, we obtain analytical solutions of the time-dependent Schrodinger equation and determine closed-form conditions for the parameters of the applied field and the quantum system that lead to complete population transfer to the indirect exciton state, in the absence of decay effects. Then, by numerical solution of the relevant density matrix equations we study the influence of decay mechanisms to the efficiency of population transfer. (C) 2013 Elsevier B.V. All rights reserved.
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