Quantum-coherent Transport in Quantum Hall Devices

这项低温凝聚态物理研究的重点是物质的基本量子性质，这些性质可以通过限制在二维几何结构中的简单且特征良好的电子系统来探测。二维和低维电子系统显示了一些最基本的强关联电子的多体量子物理，包括整数和分数量子霍尔效应以及与之相关的一维手性边态，以及零维量子点和解药中的单粒子隧穿现象。我们将通过隧穿和共振单粒子隧穿技术实验研究二维电子的集体基态和少数电子的尺寸量子化系统的量子相干特性、它们的激发、手征边态动力学和量子相变。这一结果对先进量子理论的形成和验证具有重要意义。在半导体纳米结构样品的研究中发展起来的实验技术可以通过实现基于相似材料和技术的新的电子器件来对技术产生影响。这项研究包括与材料科学家和电气工程师在样品制备方面的合作，以及与理论家在实验结果分析方面的合作。这项前沿研究涉及培养本科生、研究生和博士后，他们将受到良好的培训，以进入工业、政府和教育岗位。这项工作集中在制造的半导体结构中简单且特征良好的相互作用电子系统的基本量子性质。二维和低维电子系统表现出一些最基本的量子物理，如整数和分数量子霍尔效应以及与之相关的一维边缘通道，零维量子点和解药中的单粒子隧道现象。我们将在很低的温度和很高的磁场下实验研究低维电子和少数电子的尺寸量子化系统的量子相干性质。这一结果对先进量子理论的形成和验证具有重要意义。此外，这项研究还可以通过实现基于相似材料和技术的新型电子半导体纳米结构器件来对技术产生影响。量子反点物理可能构成新型量子计算设备的基础。这项研究涉及与材料科学家和电气工程师在样品制备方面的合作，以及与理论家在实验结果分析方面的合作。这个项目的学生经过了良好的培训，能够进入工业、政府和教育领域的职位。这位PI教授本科生课程，他的研究活动对于将现实世界的科学和现代技术带入课堂至关重要。

This low-temperature condensed matter physics research is focused on fundamental quantum properties of matter that can be probed using the simple and well-characterized system of electrons confined to a two-dimensional geometry. Two- and lower-dimensional electron systems manifest some of the most fundamental many-body quantum physics of strongly correlated electrons, including the integer and fractional quantum Hall effects and the associated one-dimensional chiral edge states, and the single particle tunneling phenomena in zero-dimensional quantum dots and antidots. The quantum-coherent properties of the collective ground states of two-dimensional electrons and the size-quantized systems of few electrons, their excitations, chiral edge state dynamics, and the quantum phase transitions will be studied experimentally via techniques of tunneling and resonant single-particle tunneling. The results are of great interest in the formulation and confirmation of advanced quantum theory. The experimental techniques developed in the study of the semiconductor nanostructured samples can have an impact on technology via realization of new electronic devices whose fabrication and operation is based on similar materials and techniques. This research includes collaborations with materials scientists and electrical engineers in sample preparation and with theorists in analysis of experimental results. This cutting-edge research involves training of undergraduate, graduate and postdoctoral students, who will be excellently trained to enter positions in industry, government and education.This work is focused on fundamental quantum properties of the simple and well-characterized systems of interacting electrons in fabricated semiconductor structures. Two- and lower-dimensional electron systems manifest some of the most fundamental quantum physics such as the integer and fractional quantum Hall effects and the associated one-dimensional edge channels, the single particle tunneling phenomena in zero-dimensional quantum dots and antidots. The quantum-coherent properties of the low-dimensional electrons and the size-quantized systems of few electrons will be studied experimentally at very low temperatures and very high magnetic fields. The results are of great interest in the formulation and confirmation of advanced quantum theory. In addition, this study can have impact on technology via realization of new electronic semiconductor nanostructured devices whose fabrication and operation is based on similar materials and techniques. The quantum antidot physics may form a basis of novel quantum computing devices. This research involves collaborations with materials scientists and electrical engineers in sample preparation and with theorists in analysis of experimental results. Students in this program are excellently trained to enter positions in industry, government and education. The PI teaches undergraduate classes, his research activity is vital in bringing real-world science and modern technology into classroom.