Photocurrent oscillations in a quantum dot photodiode

被引：1
作者：
Villas-Bôas, JM
Ulloa, SE
Govorova, AO
机构：
[1] Ohio Univ, Dept Phys & Astron, Athens, OH 45701 USA
[2] Ohio Univ, Nanoscale & Quantum Phenomena Inst, Athens, OH 45701 USA
[3] Univ Fed Sao Carlos, Dept Fis, BR-13565905 Sao Paulo, Brazil
[4] Ohio Univ, Dept Phys & Astron, Athens, OH 45701 USA
来源：
SOLID STATE COMMUNICATIONS | 2005年 / 134卷 / 1-2期
关键词：
quantum dot; decoherence; Rabi oscillation;
D O I：
10.1016/j.ssc.2004.06.047
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The coherent manipulation of quantum states is one of the main tasks required in quantum computation, and the understanding of the decoherence which prevent this manipulation is essential. Here we develop a model to describe the Rabi oscillations observed in a quantum-dot photodiode. We use a multi-level density matrix formulation, which includes multi-exciton, single particle, and wetting layer states. We demonstrate that the damping observed in recent experiments is the result of a non-resonant excitation from or to the continuum of the wetting layer states. (c) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码：33 / 35
页数：3
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