Semiconductor Cavity QED

半导体腔QED

• 批准号: 0757707
• 负责人: Galina Khitrova
• 金额: $ 52.82万
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-04-15 至 2011-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0757707&HistoricalAwards=false
• 关键词: Semiconductor; Cavity; QED

Cavity quantum electrodynamics (cQED), one of the most curious and fundamental aspects of optical physics, explores quantum dynamical processes for individual quantum objects strongly coupled to an electromagnetic resonator making two objects into one composite quantum system. One experimental bottleneck for cQED experiments using atoms is atomic motion. Atomic motion was recently reduced, but not stopped, by using lasers and magnets to cool and trap the atoms. In this project a semiconductor quantum system (quantum dot) will be coupled to a resonator. This system will explore different physics than atomic counterparts because the quantum dot does not move. Added features of the proposed experimental system are that the quantum dots will be coupled to an electromagnetic resonator constructed of a structured material called a photonic crystal. The photonic crystal resonator volume is near the minimum possible and confinement of the electromagnetic field is very high, so the coupling between the quantum dot and the electromagnetic field is very strong. Moreover, the structure is stable and totally integrated so it can be used over and over again. This research project will focus on the group's emerging capability to investigate a semiconductor nanosystem where individual quanta play a decisive role. The first specific goal of this project is to observe laser behavior from a single quantum dot. Other goals are to demonstrate a "photon blockade," which turns a incident laser beam into sequence of photons exhibiting quantum mechanical statistics, and to see the multiphoton coupling between the cavity and the quantum dot.Two graduate students will gain broad experience with semiconductor sample manipulation, nanopositioning, resolution-limited optics, continuous-wave and ultrafast-laser spectroscopy, and photon statistics measurements. The nanophotonics industry is also impacted by the education of undergraduate and graduate students trained in the basic physics and experimental skills of nanodevices. The PI of this project is the senior Faculty Associate for the College of Optical Sciences as a part of the NSF ADVANCE Institutional Transformation award to create a multi-tiered strategy for improving the representation and advancement of women in science, technology, engineering, and math fields. Cavity quantum electrodynamics with strong coupling enables nanoscience to go beyond traditional nonlinear optics and laser physics into a new regime with dynamical processes and active devices now involving quantum dots and photons taken one by one. This research will enable links between the atomic and semiconductor materials communities.

腔量子电动力学（CQED）是光学物理学中最好奇和基本方面之一，它探索了与电磁谐振器紧密耦合的单个量子对象的量子动力学过程，该过程将两个对象用于一个复合量子系统。 一种用于使用原子的CQED实验的实验瓶颈是原子运动。最近，通过使用激光和磁铁冷却和捕获原子来减少原子运动，但不会停止。 在此项目中，半导体量子系统（量子点）将与谐振器耦合。 由于量子点不移动，该系统将探索与原子对应物不同的物理学。 所提出的实验系统的附加功能是，量子点将与由称为光子晶体的结构化材料构建的电磁谐振器耦合。 光子晶体谐振器的体积接近可能的最小，电磁场的限制非常高，因此量子点和电磁场之间的耦合非常强。 此外，结构是稳定的，并且完全集成，因此可以一遍又一遍地使用。该研究项目将重点介绍该小组的新兴能力，以研究单个量子发挥作用的半导体纳米系统。该项目的第一个特定目标是观察单个量子点的激光行为。 Other goals are to demonstrate a "photon blockade," which turns a incident laser beam into sequence of photons exhibiting quantum mechanical statistics, and to see the multiphoton coupling between the cavity and the quantum dot.Two graduate students will gain broad experience with semiconductor sample manipulation, nanopositioning, resolution-limited optics, continuous-wave and ultrafast-laser spectroscopy, and photon statistics测量。纳米素养业还受到了接受纳米设计基本物理和实验技能培训的本科生和研究生的教育。 该项目的PI是光学科学学院的高级教职员工，作为NSF Advance机构转型奖的一部分，以创建一项多层战略，以改善妇女在科学，技术，工程和数学领域的代表性和进步。具有强耦合的空腔量子电动力学使纳米科学能够超越传统的非线性光学和激光物理学，并具有动态过程和活跃的设备，现在涉及量子点和光子一个一个一个一个一个一个逐一采用的动力学设备。这项研究将使原子和半导体材料社区之间的联系。