Stopped Images In Coherent Cold Atomic Vapors

相干冷原子蒸气中的停止图像

• 批准号: 0758091
• 负责人: John Howell
• 金额: $ 38万
• 依托单位: University of Rochester
• 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: 2008-07-01 至 2012-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0758091&HistoricalAwards=false
• 关键词: Stopped; Images; Coherent; Cold; Atomic

Cold atoms will be used to slow and stop optical images demonstrating a new technologically powerful technique for information management. The effort will include realizing an optical buffer or memory with the ability to load, store and retrieve weak and quantum transverse images. The combined expertise of Professor Howell's Slow Light and Quantum Optics group and the cold atoms experience and capabilities of Professor Bigelow's Cooling and Trapping group are ideally suited to achieve this goal. Encoded optical pulses will first pump a cold atom sample. Once the pump light is extinguished, the optical fields will have been interconverted to spin waves in the atomic medium, thereby storing the local electric field information of the pump. One key goal will be to stack images in the medium and then, using transverse excitation, pull out images one a time. There will also be studies to explore the capabilities of the system for making transverse entangled photons, which can then be stored in a similar medium. Preliminary studies indicate that microsecond pulses may have the possibilities of being stored for up to minutes. It is expected that this research will make a significant contribution to the field of quantum information and image processing as it will provide a new means for information storage. There are also many aspects of the research which will be of fundamental interest to the broader community including: adiabatic pulse compression and decompression, image storage and distortion, transverse coherences and narrow bandwidth pulsed entangled photons. In addition to having impact on the frontiers of physics, the work will involve the training of the next-generation workforce in AMO physics and quantum information science. This training involves students at all levels: Professors Howell & Bigelow annually participate in the Research Experiences for Undergraduates program and the Research Experiences for Teachers program and both groups educate a diverse set of graduate students.

冷原子将被用来减慢和停止光学图像，展示一种新的技术强大的信息管理技术。这项工作将包括实现一个光学缓冲器或存储器，具有加载，存储和检索弱和量子横向图像的能力。豪厄尔教授的慢光和量子光学小组的专业知识和毕格罗教授的冷却和捕获小组的冷原子经验和能力相结合，非常适合实现这一目标。 编码的光脉冲将首先泵浦冷原子样品。 一旦泵浦光熄灭，光场将在原子介质中相互转换为自旋波，从而存储泵浦的局部电场信息。一个关键的目标将是在介质中堆叠图像，然后使用横向激励，每次拉出一个图像。 还将进行研究，探索该系统制造横向纠缠光子的能力，然后将其存储在类似的介质中。 初步研究表明，微秒脉冲可能有可能被存储长达几分钟。 预计这项研究将为量子信息和图像处理领域做出重大贡献，因为它将为信息存储提供新的手段。还有许多方面的研究，这将是更广泛的社会的根本利益，包括：绝热脉冲压缩和解压缩，图像存储和失真，横向相干和窄带脉冲纠缠光子。 除了对物理学前沿产生影响外，这项工作还将涉及AMO物理学和量子信息科学的下一代劳动力的培训。 这种培训涉及各级学生：豪厄尔毕格罗教授每年参加本科生研究经验计划和教师研究经验计划，这两个团体教育一套不同的研究生。