Fundamental Quantum Optics in Hollow-Core Photonic Crystal Fibers

空心光子晶体光纤中的基础量子光学

• 批准号: 1406354
• 负责人: Michael Raymer
• 金额: $ 45.43万
• 依托单位: University of Oregon Eugene
• 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: 2014-08-15 至 2019-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1406354&HistoricalAwards=false
• 关键词: Fundamental; Quantum; Optics; Hollow; Core

This project studies an aspect of quantum physics, which is the study of the natural world at its most fundamental level. Experiments with elementary objects such as photons (constituents of light) or electrons (constituents of atoms) has led over the decades to many new technologies, including computers and lasers. The next generation of technology (called quantum technology), might create the means for ensuring perfect security of information on the internet, as well as computers that can solve problems unsolvable using today's hardware. Light, as a carrier of information, plays important roles in such technologies, so the ability to control light more and more finely is crucial for future success. The present study addresses the so-called nonlinear interactions of light that occurs in some substances or materials. For example, when very intense light of a certain color travels through a long solid-glass fiber, new colors can be created by nonlinear interactions. Such color-changing interactions have many uses, both in scientific research and in technological applications. A problem exists though, called "Raman scattering," which leads to the production of many unwanted colors in addition to those desired. In this type of scattering, energy is deposited in the vibrations of molecules making up the medium. These unwanted, randomly produced colors can degrade the purity of the light, so a means to avoid their production is an important goal. The present study is developing such a means by replacing solid-glass fibers with hollow glass fibers filled with xenon gas at extremely high pressure. Because xenon is a "noble gas" it does not form molecules, and so the Raman light scattering mechanism is absent. Optical physics and light-based information science (photonics) offer excellent opportunities to integrate research with science education.From a more technical perspective, the project addresses the need in quantum optics research for attaining ideal interactions for generating and manipulating quantum-mechanical states of light, including single photons, entangled photons, squeezed states, and entangled states, as well as for performing quantum gate operations and implementing quantum communication methods. Toward these goals, this experimental project studies optical parametric processes using high-density atomic xenon gas confined in hollow-core photonic-crystal fibers (HC-PCF). Such a medium will open up the study of fundamental quantum optical processes without the often-deleterious presence of Raman scattering. Elimination of Raman scattering removes spontaneous photon emission background signals in single-photon sources, and removes Raman-induced frequency shifting in optical soliton propagation, which limits the degree of quantum noise squeezing that can be achieved. It also decreases pump-laser degradation. Such a system could lead to well-controlled nonlinear optical processes for quantum information schemes. Developing the means to manipulate and control the states of quantum systems is of broad interest in science and in quantum information technology, metrology, quantum chemistry, nano-mechanics, etc. The topic brings together quantum opticians with optical device scientists and material scientists.

该项目研究了量子物理学的一个方面，这是对自然界最基本水平的研究。使用基本物体（如光子的成分）或电子（原子成分）进行的基本对象的实验已导致数十年来，包括许多新技术，包括计算机和激光器。下一代技术（称为量子技术）可能会创造出确保Internet上信息的完美安全以及可以使用当今硬件无法解决问题的计算机的手段。作为信息的载体，Light在此类技术中起着重要的作用，因此控制光线越来越精细的能力对于未来的成功至关重要。本研究涉及某些物质或材料中发生的所谓的非线性相互作用。例如，当某种颜色的非常强烈的光线通过长固体玻璃纤维传播时，可以通过非线性互动来创建新的颜色。这种变色的相互作用在科学研究和技术应用中都有多种用途。但是，存在一个问题，称为“拉曼散射”，除了所需的颜色外，还会导致许多不需要的颜色。 在这种类型的散射中，能量沉积在组成培养基的分子的振动中。这些不需要的，随机生产的颜色会降低光的纯度，因此避免生产的一种手段是一个重要的目标。本研究正在通过在极高的压力下用空心玻璃纤维代替固体玻璃纤维来开发这种手段。由于氙气是一种“贵重气体”，因此不形成分子，因此不存在拉曼光散射机制。光学物理和基于光的信息科学（光子学）为将研究与科学教育融为一体提供了极好的机会。从更技术的角度来看，该项目解决了量子光学研究中的需求，以实现理想的相互作用，以生成和操纵光的量子力学状态，包括单光子，包括单个光子，包括纠缠的光子，Queezed State，Queezed States，squeezed State，and and venter的范围，并实现量的量子，并实现了操作，并实现了操作量，并实现了操作。朝向这些目标，该实验项目使用限制在空心光子晶体纤维（HC-PCF）中的高密度原子氙气（HC-PCF）研究光学参数过程。这样的介质将开辟基本量子光学过程的研究，而不受拉曼散射的存在。消除拉曼散射可以消除单光子源中自发的光子发射背景信号，并消除了光学孤子传播中拉曼引起的频率转移，这限制了可以实现的量子噪声的程度。它还降低了泵激光降解。这样的系统可能会导致量子信息方案的良好控制的非线性光学过程。开发操纵和控制量子系统状态的手段在科学和量子信息技术，计量学，量子化学，纳米力学等方面具有广泛的兴趣。该主题将量子光学师与光学设备科学家和物质科学家汇集在一起​​。