標題: Tunneling Effects on Fine-Structure Splitting in Quantum-Dot Molecules
作者: Ramirez, Hanz Y.
Cheng, Shun-Jen
電子物理學系
Department of Electrophysics
公開日期: 21-五月-2010
摘要: We theoretically study the effects of bias-controlled interdot tunneling in vertically coupled quantum dots on the emission properties of spin excitons in various bias-controlled tunneling regimes. As a main result, we predict substantial reduction of optical fine-structure splitting without any drop in the optical oscillator strength for the coupled dots with high tunneling rates. This special reduction diminishes the distinguishability of polarized decay paths in cascade emission processes suggesting the use of stacked quantum-dot molecules as entangled photon-pair sources.
URI: http://dx.doi.org/10.1103/PhysRevLett.104.206402
http://hdl.handle.net/11536/5391
ISSN: 0031-9007
DOI: 10.1103/PhysRevLett.104.206402
期刊: PHYSICAL REVIEW LETTERS
Volume: 104
Issue: 20
結束頁: 
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