.png){kind=icon}
返回
Quantum Sensor for Nanoscale Defect Characterization
.png){kind=icon}
OA
AI
DOI：10.1103/PhysRevApplied.15.024029.png)
.png){kind=icon}
.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
The optical and electronic properties of semiconductors are strongly affected by structural and stoichiometric defects. The precise incorporation of dopants and the control of impurities are essentially what makes semiconductors useful materials for a broad range of devices. The standard defect and impurity characterization methods are sensitive only on a macroscopic scale, like the most widely used method of deep-level transient spectroscopy (DLTS). We perform time-resolved measurements of the resonance fluorescence of a single self-assembled (In,Ga)As quantum dot (QD) at low temperatures (4.2 K). By pulsing the applied gate voltage, we are able to selectively occupy and unoccupy individual defects in the vicinity of the dot. We address the exciton transition of the QD with a tunable diode laser. Our time resolved measurements exhibit a shift of the resonance energy of the optical transition. We attribute this to a change of the electric field in the dot?s vicinity, caused by electrons tunneling from a reservoir to the defect sites. Furthermore, we are able to characterize the defects concerning their position and activation energy by modeling our experimental data. Our results thus demonstrate how a quantum dot can be used as a quantum sensor to characterize the position and activation energy of individual shallow defects on the nanoscale.
AI总结
对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
IF:
4.4
论文数:
7.1K
被引数:
2.8W
机构
引用论文
Effect of Peptide AEDG on Telomere Length and Mitotic Index of PHA-Stimulated Human Blood Lymphocytes肽AEDG对PHA刺激的人外周血淋巴细胞端粒长度和有丝分裂指数的影响
PREAI
分享收藏Highly indistinguishable and strongly entangled photons from symmetric GaAs quantum dots.png)
NATURE COMMUNICATIONSOAAI
NATURE COMMUNICATIONSIF15.7
OAAI分享收藏High-Precision Nanoscale Temperature Sensing Using Single Defects in Diamond使用金刚石中的单个缺陷进行高精度纳米级温度传感NANO LETTERS
OAAI
NANO LETTERSIF9.1
OAAI分享收藏分享收藏
查看更多内容