NSF Young Investigator

技术摘要：将对介观半导体结构中的低温输运进行实验研究。 特别注意将放在探索量子传输的随机性和经典混沌的量子签名之间的联系。 应用包括使用相位相干传输的反馈控制，以开发半导体量子点作为低噪声磁力计。 非技术性摘要： 研究的重点是了解控制超小型设备中电子运动的物理学。 最近的研究结果表明，当电子可以移动距离 大于器件尺寸而不被杂质和其它缺陷明显散射，则器件的几何形状成为决定电子运动的重要因素。 这种对几何形状的敏感性可以成为研究混沌运动的潜在机制并最终设计新设备的有用工具。 该研究将在低温下进行， 温度和非常高的质量 半导体结构，以增加电子的迁移率。 :

Technical abstract: An experimental investigation will be carried out of low temperature transport in mesoscopic semiconductor structures. Particular attention will be placed on exploring the connection between randomness in quantum transport and quantum signatures of classical chaos. Applications include the use of feedback control of phase-coherent transport for the purpose of developing semiconductor quantum dots to operate as low-noise magnetometers. Nontechnical abstract: The focus of the research is to understand the physics which governs the motion of electrons in ultrasmall devices. Recent results indicate that when the electrons can travel distances larger than the device dimension without appreciable scattering by impurities and other defects then the geometry of the device becomes a significant factor in determining the electron's motion. This sensitivity to geometry can be a useful tool to study the underlying mechanisms of chaotic motion and to ultimately design new devices. The proposed research will be carried out at low cryogenic temperatures and in very high quality semiconductor structures to increase the mobility of the electrons. :