Photon Emission from a Cavity-Coupled Quantum Dot

腔耦合量子点的光子发射

• 批准号: 1409556
• 负责人: Jason Petta
• 金额: $ 42万
• 依托单位: Princeton University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-08-01 至 2018-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1409556&HistoricalAwards=false
• 关键词: Photon; Emission; Cavity; Coupled; Quantum

Non-Technical AbstractThe use of lasers is ubiquitous in modern science and technology, with applications ranging from optical interferometers to compact disk players. This project investigates the physics of quantum dots that are coupled to microwave cavities. Quantum dots are nanoscale devices that can be used to trap single electrons. A microwave cavity consists of two 'mirrors' that trap a single photon of light for a relatively long period of time. The research team has shown that it may possible to create a new type of laser by flowing single electrons through a quantum dot that is coupled to a cavity. The research team is performing measurements to determine if single microwave photons can be generated with the device. In addition to training graduate and undergraduate students, the principal investigator will support a comprehensive outreach program. A 'quantum device' website is being constructed and new tutorials will be created to demonstrate basic concepts in classical mechanics.Technical AbstractThe project aims to understand the dynamics of quantum dots that are coupled to a single microwave cavity. Single electron tunneling in this system results in photoemission and the statistics of the resulting light field is being studied. By pumping single electrons through a cavity coupled double quantum dot, the research team is attempting to create a deterministic single photon source that operates in the microwave regime. Photon detection aspects are being studied, by using one double quantum dot as a photon emitter and a second double quantum dot as a photon detector. The experiments are made possible by cutting-edge technological advances in quantum dot devices and quantum limited amplification. In the advanced phase of the program, the research team will couple multiple quantum dots to a single microwave cavity and search for collective effects. For example, do charge transitions in one double quantum dot couple to another quantum dot that is located ~ 1 cm away via the cavity field? Is it possible to observe collective enhancements in photon emission, such as Dicke superradiance? In addition to the technical effort, the research team will develop a 'Quantum Device Wiki' that introduces the basic aspects of quantum devices (single electron charging and Pauli blockade). The Wiki also supports several simulation packages that will be of use to the technical community. The principal investigator is creating short classical mechanics tutorials that will be posted on the internet for open access.

非技术摘要在现代科学技术中使用激光无处不在，应用程序从光学干涉仪到紧凑型磁盘播放器的应用。该项目研究了与微波腔耦合的量子点的物理。量子点是可用于捕获单电子的纳米级设备。微波炉由两个“镜子”组成，它们在相对较长的时间内将单个光子捕获。研究团队表明，可以通过将单个电子流到耦合到空腔的量子点中来创建一种新型的激光器。研究团队正在执行测量，以确定该设备是否可以生成单个微波光子。除了培训毕业生和本科生外，首席研究人员还将支持一项全面的外展计划。正在构建一个“量子设备”网站，并将创建新的教程以演示经典力学中的基本概念。技术摘要该项目旨在了解与单个微波炉耦合的量子点的动力学。该系统中的单电子隧道导致光发射，并且正在研究所得光场的统计数据。通过通过腔耦合双量子点泵送单个电子，研究团队正在尝试创建一个确定性的单光子源，该光子源在微波处理中运行。通过使用一个双量子点作为光子发射极和第二个双量子点作为光子检测器，正在研究光子检测方面。通过量子点设备的最先进的技术进步和量子有限的扩增，实验是可能的。在该计划的高级阶段，研究团队将将多个量子点与单个微波腔息息相关，并寻找集体效果。例如，在一对双量子点对夫妇中的电荷过渡是否到另一个量子点，该点位于腔场约1厘米的范围内？是否可以观察到光子发射中的集体增强，例如Dicke超沉载？除了技术工作外，研究团队还将开发一个“量子设备Wiki”，该设备引入了量子设备的基本方面（单电子充电和Pauli封锁）。 Wiki还支持几个对技术界使用的模拟软件包。首席调查员正在创建简短的古典力学教程，这些教程将发布在Internet上以进行开放访问。