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Distinctive characteristics of carrier-phonon interactions in optically driven semiconductor quantum dots
Advances in Physics: X ( IF 6 ) Pub Date : 2019-09-09 , DOI: 10.1080/23746149.2019.1655478
D. E. Reiter 1 , T. Kuhn 1 , V. M. Axt 2
Affiliation  

We review distinct features arising from the unique nature of the carrier-phonon coupling in self-assembled semiconductor quantum dots. Because of the discrete electronic energy structure, the pure dephasing coupling usually dominates the phonon effects, of which two properties are of key importance: The resonant nature of the dot-phonon coupling, i.e. its non-monotonic behavior as a function of energy, and the fact that it is of super-Ohmic type. Phonons do not only act destructively in quantum dots by introducing dephasing, they also offer new opportunities, e.g. in state preparation protocols. Apart from being an interesting model systems for studying fundamental physical aspects, quantum dot and quantum dot-microcavity systems are a hotspot for many innovative applications. We discuss recent developments related to the decisive impact of phonons on key figures of merit of photonic devices like single or entangled photon sources under aspects like indistinguishability, purity and brightness. All in all it follows that understanding and controlling the carrier-phonon interaction in semiconductor quantum dots is vital for their usage in quantum information technology.



中文翻译:

光驱动半导体量子点中载流子-声子相互作用的显着特征

我们回顾了自组装半导体量子点中载流子-声子耦合的独特性质所产生的独特特征。由于电子能量结构的离散性,纯相移耦合通常主导声子效应,其中两个特性至关重要:点-声子耦合的共振特性,即其非单调行为作为能量的函数,以及它是超欧姆型的事实。声子不仅通过引入相移在量子点中具有破坏性作用,而且还提供了新的机会,例如在状态准备协议中。量子点和量子点微腔系统除了是研究基本物理方面的有趣模型系统外,还是许多创新应用的热点。我们将讨论与声子对光子器件(如单个或纠缠的光子源)的关键品质因数的决定性影响有关的最新进展,如不可分辨性,纯度和亮度。总而言之,理解和控制半导体量子点中的载子-声子相互作用对于它们在量子信息技术中的使用至关重要。

更新日期:2019-09-09
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