EAGER: Coherent control of quantum dot spin states by simultaneous optical and microwave excitation

本研究的目的是利用光场和微波场的同时激发来研究和控制半导体量子点的自旋性质。该方法是使用光场来创建原子跃迁，同时使用微波场来诱导自旋翻转，从而允许访问由于自旋选择规则而通常被禁止的原子跃迁。该方法将用于实现砷化铟量子点中暗激子的相干控制。智力价值：拟议的研究将使半导体中的基本自旋性质的研究成为可能，这对广泛的研究领域包括凝聚态物理学，量子光学，量子信息和自旋电子学具有核心重要性。它还将允许探测和控制激子状态的黑暗，其性质知之甚少。暗激子的控制进一步提供了一种存储和重新释放单光子的方法，可以作为未来量子计算机和量子网络的量子存储器，以及使用量子特性实现改进功能的新光电和磁光器件。它可以为未来指数级更快的量子计算机和无条件安全的量子网络铺平道路。它还将为研究生提供研究和教育机会，并通过参加电子和应用物理研究所的夏季研究计划促进本科生和高中研究。

The objectives of this research are to study and control the spin properties of semiconductor quantum dots using simultaneous optical and microwave field excitation. The approach is to use optical fields to create atomic transitions while simultaneously using a microwave field to induce spin flips, allowing access to atomic transitions that are normally forbidden due to spin selection rules. This method will be used to achieve coherent control of dark excitons in an indium arsenide quantum dot .Intellectual merit: The proposed research will enable the study of fundamental spin properties in semiconductors, which is of central importance to a broad range of research fields including condensed matter physics, quantum optics, quantum information, and spintronics. It will also allow the probing and control dark of exciton states whose properties are poorly understood. Control of dark excitons further provides a method for storage and re-release of single photons, and can serve as a quantum memory for future quantum computers and quantum networks, as well as new opto-electronic and magneto-optic devices that use quantum properties to achieve improved functionalityBroader impact: This research will advance scientific knowledge in a broad range of fields that include optics, microwave engineering, and atomic physics. It could pave the wave for future exponentially faster quantum computers and unconditionally secure quantum networks. It will also provide research and educational opportunities for graduate students, and promote undergraduate and high school research through participation in the Summer Research Program at the Institute for Research in Electronics and Applied Physics.