Multimode Continuous-Variable Quantum Optics for Precision Sensing

用于精密传感的多模连续可变量子光学器件

• 批准号: 2207767
• 负责人: Brian Smith
• 金额: $ 45.68万
• 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: 2022
• 资助国家: 美国
• 起止时间: 2022-09-01 至 2025-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2207767&HistoricalAwards=false
• 关键词: Multimode; Continuous; Variable; Quantum; Optics

Improved precision in measurement has enabled numerous scientific and technical breakthroughs. For example, increased resolution in timing arising from the development of ultrashort laser pulses has enabled entirely new approaches to study molecular dynamics on short time scales. This project aims at developing experimental methods for the generation, manipulation and measurement of quantum-mechanical states of light and to exploit these for quantum-enhanced sensing under adverse conditions in which optical loss and background noise are present. The project goes beyond prior work by utilizing multiple optical channels, or modes, that can have strong quantum-mechanical correlations, known as entanglement, to both enhance the precision in optical interferometry, but also suppress the contributions of background noise. To diversify, educate and train the upcoming quantum workforce the project will provide a solid background and mentoring in quantum and nonlinear optics for a postdoctoral researcher, graduate student, undergraduate students, as well as related outreach activities. The project will focus on the experimental development of multimode squeezed vacuum states generated by pulsed spontaneous parametric down conversion. Two different approaches to detecting the nonclassical light will be developed – a photon-number-resolving spectrometer and photon-counting sum-frequency generation. The project will explore theoretically the fundamental limits of sensing in realistic settings, where loss, noise and other imperfections arise. Photon addition and subtraction in well-defined temporal modes will be explored as means to boost the performance of quantum sensing protocols. The project results will advance the understanding of the role entanglement in sensing and influence future quantum-enhanced sensing research.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

提高的测量精度已使许多科学和技术突破。例如，由于超短激光脉冲的发展而产生的定时分辨率提高了，这使得在短时间尺度上研究分子动力学的全新方法。该项目旨在开发实验方法，用于对光的量子力学状态的生成，操纵和测量，并利用它们在存在光损失和背景噪声的不利条件下进行量子增强的感觉。该项目通过利用可以具有强大的量子力学相关性（称为纠缠）来提高光学干扰中的精度，但也抑制背景噪声的贡献。为了使即将到来的量子劳动力多样化，教育和培训该项目将为博士后研究人员，研究生，本科生以及相关的外展活动提供稳固的背景和心理化。该项目将集中于由脉冲赞助的参数降低转换产生的多模挤压真空状态的实验开发。将开发出两种检测非经典光的方法 - 一种光子数分辨的光谱仪和光子计数总和频率生成。从理论上讲，该项目将在现实环境中探索感应的基本限制，在现实情况下，损失，噪音和其他缺陷会出现。定义明确的临时模式中的光子添加和减法将作为提高量子灵敏度方案的性能的手段。该项目的结果将提高人们对敏感性的作用的理解，并影响未来的量子增强灵敏度研究。该奖项反映了NSF的法定任务，并使用基金会的知识分子优点和更广泛的影响来评估，被认为是宝贵的支持。