INSPIRE: Classical Entanglement in Optical Science and Engineering

INSPIRE：光学科学与工程中的经典纠缠

• 批准号: 1539859
• 负责人: Joseph Eberly
• 金额: $ 75万
• 依托单位: University of Rochester
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-08-01 至 2020-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1539859&HistoricalAwards=false
• 关键词: INSPIRE; Classical; Entanglement; Optical; Science

This INSPIRE project is jointly funded by MPS/PHY/Atomic, Molecular and Optical Experimental Physics (Experimental), MPS/PHY/Molecular and Optical Physics (Theoretical), and ENG/ECCS/Electronic, Photonic and Magnetic Devices with co-funding from the MPS Office of Multidisciplinary Activities and the Office of Integrative Activities.This project involves research on beams of light, with high potential for significant advances in fields such as telecommunication. The research to be done will include theoretical studies as well as laboratory demonstrations. The projected results include dramatic simplifications of communication techniques that can come from exploitation of the principle of "entanglement", previously not associated with macroscopic light beams. Entanglement refers to the situation in which widely separated particles cannot be described independently of each other (or, mathematically, when the whole is not equal to the sum of its parts).The goal of the project is to demonstrate the utility of entanglement at the non-quantum level. The simple existence of non-quantum entanglement is quickly becoming accepted. Utility will come, for example, from acquiring the ability to use classically entangled macroscopic light beams for communications protocols. This will avoid the strict requirements associated with generation and management and registration of individual photons. In practice, below-threshold diode laser light will provide macroscopically entangled light beams with exactly classical (thermal Gaussian) statistics, and power meters will provide detection capability without individual photon detection. This combination has already been demonstrated in the laboratory. Desirable classical features are the ability to obtain entanglement beyond the two-party level with ordinary lab devices, as well as the existence of stochastic randomness, available in every partially polarized macroscopic light beam. A new theoretical description of three-party additive entanglement inequalities, distinct from tangle-based monogamy, has already emerged from ongoing preliminary work. Two-way beneficial exchanges with the fields of quantum information and quantum optics appear desirable and feasible, for example in implementing protocols for optical multi-mode entanglement swapping at the macroscopic level.Experimental verification will elucidate the potential benefits of this new theory in practical applications.

该INSPIRE项目由MPS/PHY/原子、分子和光学实验物理联合资助（实验），MPS/PHY/分子和光学物理（理论），和ENG/ECCS/电子，光子和磁器件，由MPS多学科活动办公室和综合活动办公室共同资助。该项目涉及光束的研究，在电信等领域具有巨大的发展潜力。要做的研究将包括理论研究以及实验室演示。预计的结果包括通信技术的戏剧性简化，这可能来自于利用“纠缠”原理，以前与宏观光束无关。纠缠是指在这种情况下，相距甚远的粒子不能相互独立地描述（或者，在数学上，当整体不等于其部分之和时）。该项目的目标是证明纠缠在非量子水平上的效用。非量子纠缠的简单存在很快被接受。例如，获得将经典纠缠宏观光束用于通信协议的能力将带来实用性。这将避免与单个光子的生成、管理和登记相关联的严格要求。在实践中，低于阈值的二极管激光将提供具有精确经典（热高斯）统计的宏观纠缠光束，并且功率计将提供检测能力而无需单个光子检测。这种组合已经在实验室中得到了证明。理想的经典特性是能够用普通的实验室设备获得超过两方水平的纠缠，以及存在随机性，在每个部分偏振的宏观光束中都可以获得。一个新的理论描述的三方添加剂纠缠不平等，不同的纠缠为基础的一夫一妻制，已经出现了正在进行的初步工作。与量子信息和量子光学领域的双向有益交换是可取和可行的，例如在宏观层次上实现光学多模纠缠交换协议，实验验证将阐明这一新理论在实际应用中的潜在好处。