Artificial atoms from magnetic semiconductors

磁性半导体的人造原子

• 批准号: 60720866
• 负责人: Professor Dr. Laurens W. Molenkamp
• 金额: --
• 依托单位: Lehrstuhl für Experimentelle Physik III
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2007
• 资助国家: 德国
• 起止时间: 2006-12-31 至 2010-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/60720866?language=en
• 关键词: Artificial; atoms; magnetic; semiconductors

This research project proposes to study magnetic and spin phenomena in the quantum limit of tunneling transport. The approach to be used consists of an MBE grown vertical tunneling heterostructure based on II-VI dilute magnetic semiconductors (DMS), which is patterned using nanolithography down to a size where single electron quantum effects govern the transport, and fitted with an electrostatic gate providing for electric field control of the tunneling process. This architecture will fulfill three important roles. First, it will perform the function of a three terminal spin transistor allowing for filtering of either spin species as selected by the gate settings. Second, it will serve as an ideal test bed for fundamental investigations of quantum spin-transport, a proper understanding of which is essential for progressing along the road towards quantum information processing and quantum computing. Third, it will yield a novel research paradigm for optical control of electron spin or information imprint between a photon and an electron, which can provide a new scheme of quantum information technology

该研究项目提议在隧道运输的量子极限中研究磁性和自旋现象。使用的方法由基于II-VI稀释磁性半导体（DMS）种植的MBE种植的垂直隧道异质结构组成，该结构使用纳米光刻进行模式化，直至单个电子量子效应控制传输的尺寸，并配备了用于为隧道过程的电场控制的静电栅极。该体系结构将扮演三个重要角色。首先，它将执行三个末端旋转晶体管的功能，以允许对门设置选择的任何一个旋转物种过滤。其次，它将作为量子自旋传输的基本研究的理想测试床，对量子旋转的适当了解对于沿着沿量子信息处理和量子计算的道路发展至关重要。第三，它将产生一种新型的研究范式，用于对电子自旋的光学控制或光子和电子之间的信息烙印，这可以提供新的量子信息技术方案