Excitonic spin-state preservation mediated by optical-phonon resonant excitation in a single quantum dot

H. Kumano; H. Kobayashi; S. Ekuni; Y. Hayashi; M. Jo; H. Sasakurav S. Adachi; S. Muto; I. Suemune

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Excitonic spin-state preservation mediated by optical-phonon resonant excitation in a single quantum dot

机译：在单个量子点中由光子共振激发介导的激子自旋态保持

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High degree of excitonic spin-state preservation during energy relaxation is demonstrated in a single quantum dot. Optical-phonon resonances and corresponding suppression of spin relaxation are clearly identified as dip structures in photoluminescence excitation spectra probed by the positive trion emission. Consequently, under the longitudinal optical-phonon resonant excitation, a distinguishably high degree of circular polarization up to ～0.85 is achieved. Extended spin-relaxation time in the positive trion ground state compared to that in neutral exciton ground state is also revealed.

机译：在单个量子点中证明了能量弛豫期间高度激子自旋态保持。光子声子共振和自旋弛豫的相应抑制被清楚地识别为由正tri子发射探测的光致发光激发光谱中的倾角结构。因此，在纵向光子声共振激发下，圆偏振度达到了〜0.85。与中性激子基态相比，在正三极管基态下自旋弛豫时间也延长了。

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《Physical review》 |2008年第8期|25-28|共4页
作者
H. Kumano; H. Kobayashi; S. Ekuni; Y. Hayashi; M. Jo; H. Sasakurav S. Adachi; S. Muto; I. Suemune;
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正文语种 eng
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quantum dots; excitons and related phenomena; optical creation of spin polarized carriers; spin relaxation and scattering;

机译：量子点;激子和相关现象;自旋极化载体的光学产生;自旋弛豫和散射;

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机译：量子点共振激发下声子介导的非共振量子点-腔耦合
2. Resonant Excitation of CdTe/ZnTe Quantum Dot Pairs as a Tool for Spectroscopic Study of the Excitonic p-States [J] . A. Bogucki, T. Smolenski, M. Goryca, Acta Physica Polonica . 2013,第5期

机译：CdTe / ZnTe量子点对的共振激发作为激子p态的光谱研究工具
3. Resonant excitonic emission of a single quantum dot in the Rabi regime [J] . R. Melet, V. Voliotis, A. Enderlin, Physical review . 2008,第7期

机译：Rabi机制中单个量子点的共振激子发射
4. Observation Of Excitonic Energy Levels Of CuCl Quantum Dots Using Resonant One- And Two-photon Excitation [C] . Edamatsu, K., Tsukii, . 1997

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5. Resonant Excitation Spectroscopy and Photon Statistics of Self-Assembled Semiconductor Quantum Dots [D] . Chen, Disheng. 2017

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6. Excitonic Transitions and Off-resonant Optical Limiting in CdS Quantum Dots Stabilized in a Synthetic Glue Matrix [O] . PushpaAnn Kurian, C Vijayan, K Sathiyamoorthy, 2007

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7. Excitonic spin-state preservation mediated by optical-phonon resonant excitation in a single quantum dot [O] . Kumano, H., Kobayashi, H., Ekuni, S., 2008

机译：在单个量子点中由光子共振激发介导的激子自旋态保持
8. Quantum Logic Using Excitonic Quantum Dots in External Optical Microcavities [R] . Raymer, M. G. 2003

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Excitonic spin-state preservation mediated by optical-phonon resonant excitation in a single quantum dot

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