Fiber-based quantum entanglement technologies

基于光纤的量子纠缠技术

• 批准号: RGPIN-2019-07019
• 负责人: Qian, Li
• 金额: $ 4.66万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=691232
• 关键词: Fiber; based; quantum; entanglement; technologies

Quantum entanglement is a fascination of scientists. Optical fibre is a marvel of engineering. The marriage of the two will create a technological transformation the 21st century has yet to witness, if the past is any indication of the future. In the 60 years after the invention of laser, it has transformed from a laboratory curiosity to a necessity in everyday life. Indeed, the Internet and social media would not have been possible without lasers. Nor would they be possible without optical fibre. It was the marriage of the two, lasers and optical fibre, that created the revolution in telecommunications. Analogously, entangled photons will likely play an equally important role as lasers do in not too distant future. The “weird” correlation between two entangled particles, once described by Einstein as “spooky action at a distance,” has the potential to be an extremely powerful resource for computing, communication, metrology, and beyond. Entanglement-based quantum cryptography, for example, utilizes the correlation of the photons sent to two remote parties and allows them to share a common set of random cryptographic keys. It guarantees the security of the keys since any eavesdropping attempt would result in a detectable deterioration of correlation. The correlation of the photons can also be used to achieve higher accuracy in metrology. ******To best utilize entangled photons as a technological resource, we propose here to use fibre-optics technology as a platform to create and manipulate quantum entanglement, and to demonstrate its practical applications. Built on our unique expertise of generating entangled photons in a specialty fibre the periodically poled silica fibre, and the successful commercialization of the fibre-based entanglement source, we propose to develop several practical technologies using quantum entanglement. More specifically, we propose to develop more sophisticated quantum entanglement sources and better control over their physical properties, and then we will demonstrate how the variety of quantum entanglement these sources offer can be utilized to produce practical technologies in quantum cryptography and quantum metrology. ******Quantum technology will play an important role in the 21st century. By combining quantum entanglement with practical fiber-optic technologies, this proposal aims to take an important step forward in the development of quantum technology for practical applications.**

量子纠缠令科学家们着迷，这两者的结合将创造 21 世纪前所未有的技术变革，如果过去能预示未来的 60 年的话。激光的发明，它已经从实验室的好奇心变成了日常生活的必需品。事实上，如果没有激光，互联网和社交媒体就不可能存在，这就是两者的结合。激光类似地，在不久的将来，纠缠光子可能会发挥与激光同样重要的作用。爱因斯坦曾将两个纠缠粒子之间的“奇怪”关联描述为“幽灵般的作用”。例如，基于纠缠的量子密码学有潜力成为计算、通信、计量等方面极其强大的资源，它利用发送到两个远程方的光子的相关性，并使它们能够共享一组通用的随机加密密钥，因为任何窃听尝试都会导致可检测到的相关性恶化*****。 *为了充分利用纠缠光子作为技术资源，我们在此建议使用光纤技术作为创建和操纵量子纠缠的平台，并基于我们在特种光纤中生成纠缠光子的独特专业知识来展示其实际应用。定期的极化二氧化硅光纤以及基于光纤的纠缠源的成功商业化，我们建议开发几种利用量子纠缠的实用技术，更具体地说，我们建议开发更复杂的量子纠缠源并更好地控制其物理特性。将展示如何利用这些来源提供的各种量子纠缠来产生量子密码学和量子计量学中的实用技术 ******通过将量子纠缠与实际相结合，量子技术将在 21 世纪发挥重要作用。光纤技术，该提案旨在在开发实际应用的量子技术方面迈出重要一步。 **