ITR: Quantum Information and Communication Using Massive Etanglement of Collective Variables

ITR：利用集体变量的大规模纠缠的量子信息和通信

• 批准号: 0312791
• 负责人: Nicholas Bigelow
• 金额: $ 43.3万
• 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: 2003
• 资助国家: 美国
• 起止时间: 2003-09-01 至 2006-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0312791&HistoricalAwards=false
• 关键词: ITR; Quantum; Information; Communication; Using

Central to the concepts of quantum information (QI), communication and computation is the idea of quantum entanglement. An important task for the QI field is to develop the ability to control and transmit an unknown quantum state from one system to another and to create entanglement between separate quantum systems, particularly for the case where the second system is at some distant location. Most current quantum information network schemes rely on coupling quantum information flow through photonic channels while using massive particle systems for quantum information storage and manipulation. Recently, a great deal of attention has turned to a new possibility: the use of continuous, collective quantum variables for quantum information applications. An atomic entanglement scheme based on this concept has the attractive feature that continuous variable entanglement is realized in a vapor of many millions of atoms using simple set-ups using only coherent laser light generated from simple diode lasers. The research project supported by this award is based on such a scheme, the entanglement of spins of ground-state neutral atoms. The work is dedicated to studying various fundamental aspects of the entanglement process and its application to problems such as entangled wavelength multiplexing. As optical and electronic systems are miniaturized to smaller and smaller scales, it is natural that quantum mechanics will become an essential feature of information engineering. Hence, studies of quantum systems must be an integral part of the national goal of developing tools for nanoscience information technologies.

量子信息 (QI)、通信和计算概念的核心是量子纠缠的概念。 QI 领域的一项重要任务是开发控制未知量子态并将其从一个系统传输到另一个系统的能力，并在单独的量子系统之间创建纠缠，特别是在第二个系统位于某个遥远位置的情况下。当前大多数量子信息网络方案依赖于通过光子通道耦合量子信息流，同时使用大规模粒子系统进行量子信息存储和操作。 最近，大量的注意力转向了一种新的可能性：将连续的、集体的量子变量用于量子信息应用。 基于这一概念的原子纠缠方案具有吸引人的特征，即使用简单的设置仅使用简单二极管激光器产生的相干激光在数百万个原子的蒸气中实现连续可变纠缠。 该奖项支持的研究项目就是基于这样一种方案，即基态中性原子自旋的纠缠。 这项工作致力于研究纠缠过程的各个基本方面及其在纠缠波长复用等问题中的应用。随着光学和电子系统的尺寸越来越小，量子力学自然会成为信息工程的一个基本特征。因此，量子系统的研究必须成为开发纳米科学信息技术工具的国家目标的一个组成部分。