RUI: Quantum Fidelity in Multimode Optical Memory

RUI：多模光存储器中的量子保真度

• 批准号: 1506049
• 负责人: Andrew Dawes
• 金额: $ 17.99万
• 依托单位: Pacific University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-09-01 至 2018-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1506049&HistoricalAwards=false
• 关键词: RUI; Quantum; Fidelity; Multimode; Optical

As electronic devices continue to increase their processing speeds, the demand for high speed internet communications and data networks will require new technologies for storing and processing large amounts of data. Electronics are built on the use of the electron to carry and process information, and in an analogous way the field of photonics is developing devices that use particles of light (photons) to carry and process information. Individual photons obey the laws of quantum mechanics, so in order to fully understand the operation of photonic devices, quantum measurements will be performed on these new devices. One particularly essential component is a memory or information storage device. Many candidates for photonic memory exist but few have been characterized at the quantum (few-photon) level. This research program will apply new techniques for measuring the quantum properties of light to a variety of photonic memory devices. The result will be a deeper understanding of device operation that may lead to optimized devices for future applications.Photonic memory devices have been demonstrated using slow and stored-light protocols based on Electromagnetically Induced Transparency (EIT) in Rubidium. The goal of this program is to measure the quantum state of light retrieved from several implementations of these devices in both warm and cold Rubidium vapor samples. The light stored and retrieved from such systems will be measured and analyzed using a highly efficient array of low-noise photodetectors. This technique can simultaneously measure multiple optical modes and will be used to correlate multiple modes and determine which modes (or combinations of modes) are most robust under different storage conditions. A full quantum-mechanical understanding of the optical signal retrieved from memory allows complete characterization of the device performance and will inform future work in the development of photonic memory devices.

随着电子设备继续提高其处理速度，对高速互联网通信和数据网络的需求将需要用于存储和处理大量数据的新技术。电子学是建立在使用电子来携带和处理信息的基础上的，以类似的方式，光子学领域正在开发使用光粒子（光子）来携带和处理信息的设备。单个光子遵守量子力学定律，因此为了充分理解光子器件的运行，将对这些新器件进行量子测量。一个特别重要的组件是存储器或信息存储设备。光子存储器存在许多候选者，但很少有人在量子（少光子）水平上表征。这项研究计划将应用新技术来测量各种光子存储设备的光的量子特性。其结果将是更深入地了解设备的操作，可能会导致优化的设备，为未来的应用。光子存储器设备已被证明使用慢和存储光协议的基础上电磁感应透明（EIT）在铷。该计划的目标是测量从这些设备的几个实现中检索到的光的量子态，无论是热的还是冷的铷蒸气样品。将使用高效的低噪声光电探测器阵列来测量和分析从这种系统中存储和检索的光。这种技术可以同时测量多个光学模式，并将用于关联多个模式，并确定哪些模式（或模式组合）在不同的存储条件下最稳健。从存储器中检索的光信号的完整的量子力学的理解允许完整的表征的设备的性能，并将告知未来的工作在光子存储器设备的发展。