Applications of Superradiant Lasers for Inertial Sensing

超辐射激光器在惯性传感中的应用

• 批准号: 2207963
• 负责人: Murray Holland
• 金额: $ 30万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-06-01 至 2025-05-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2207963&HistoricalAwards=false
• 关键词: Applications; Superradiant; Lasers; Inertial; Sensing

This is a theoretical project to build a new kind of inertial sensor capable of observing and measuring extremely small rotations and extremely small accelerations. Inertial sensors, including both gyroscopes and accelerometers, are especially important in navigation applications for aviation, marine vehicles including submarines and ships, and space-based transport platforms. Existing technologies are impressive, but still suffer from slight imperfections that lead to significant drifts and imprecision. These imperfections are hard to overcome with standard approaches, since they arise from phenomena such as light scattering that are ubiquitous. In this project, the PI presents a planned program of research that brings to the table a new kind of technology with potential gains in performance and robustness to these adverse effects. The PI will analyze theoretically this new type of inertial sensor founded on a completely novel physical principle.At the heart of the proposed device is a phenomenon known as superradiance, that is, a term that describes the potentially rapid dissipation of energy in the form of light from an ensemble of atoms when they are prepared in special internal states. The atoms in the superradiant laser gyroscope are coupled together by photons that circulate around a high fitness optical ring resonator. The approach employs special atoms that possess long lived optically excited states; the same states that are used for the best atomic clocks. When compared with existing technologies, the system offers potential performance advantages that arise from the fact that the optical coherence is stored in the atomic dipoles rather than in the optical resonator field. This provides a phase rigidity due to collective effects that avoids the gyroscope being sensitive to the standard adverse imperfections that limit the performance of virtually all gyroscopes in the field. The outcomes of the project will be quantitative calculations of the ultimate sensitivity and precision, the dynamic range, and an analysis of motional effects in the ensemble. Evaluations will be made of the robustness to noise sources, including homogeneous and inhomogeneous dephasing (primarily Doppler effects), as well as the omnipresent vibrational and thermal fluctuations of the optical cavity length.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.

这是一个建立一种能够观测和测量极小转动和极小加速度的新型惯性传感器的理论项目。惯性传感器，包括陀螺仪和加速度计，在航空、海上交通工具（包括潜艇和船舶）以及天基运输平台的导航应用中尤为重要。现有技术令人印象深刻，但仍然存在轻微的缺陷，导致显着的漂移和不精确。这些缺陷很难用标准方法克服，因为它们是由诸如光散射之类的现象引起的，而光散射是无处不在的。在这个项目中，PI提出了一个有计划的研究计划，该计划提出了一种新的技术，该技术具有潜在的性能增益和对这些不利影响的鲁棒性。PI将从理论上分析这种基于全新物理原理的新型惯性传感器。该装置的核心是一种被称为超辐射的现象，即描述当原子处于特殊内部状态时，能量以光的形式从原子系综中快速耗散的术语。超辐射激光陀螺仪中的原子通过围绕高适应度光学环形谐振器循环的光子耦合在一起。这种方法采用了具有长寿命光激发态的特殊原子;这些状态与用于最好的原子钟的状态相同。与现有技术相比，该系统提供了潜在的性能优势，这是由于光学相干性存储在原子偶极子中而不是光学谐振腔场中。这提供了由于集体效应而导致的相位刚性，其避免了陀螺仪对标准不利缺陷敏感，该标准不利缺陷限制了现场几乎所有陀螺仪的性能。 该项目的成果将是对最终灵敏度和精度、动态范围的定量计算，以及对集合中运动效应的分析。将对噪声源的鲁棒性进行评估，包括均匀和不均匀的退相（主要是多普勒效应），以及光学腔长的无所不在的振动和热波动。该奖项反映了NSF的法定使命，并被认为值得通过使用基金会的知识价值和更广泛的影响审查标准进行评估来支持。

项目成果

Mean-field Floquet theory for a three-level cold-atom laser

三能级冷原子激光器的平均场Floquet理论

• DOI: 10.1103/physreva.106.013706
• 发表时间: 2022
• 期刊: Physical Review A
• 影响因子: 2.9
• 作者: Harmon, Gage W.;Reilly, Jarrod T.;Holland, Murray J.;Jäger, Simon B.
• 通讯作者: Jäger, Simon B.

Adiabatic control of decoherence-free subspaces in an open collective system

开放集体系统中无退相干子空间的绝热控制

• DOI: 10.1103/physreva.106.023703
• 发表时间: 2022
• 期刊: Physical Review A
• 影响因子: 2.9
• 作者: Reilly, Jarrod T.;Jäger, Simon B.;Cooper, John;Holland, Murray J.
• 通讯作者: Holland, Murray J.

Lindblad Master Equations for Quantum Systems Coupled to Dissipative Bosonic Modes

• DOI: 10.1103/physrevlett.129.063601
• 发表时间: 2022-08-02
• 期刊: PHYSICAL REVIEW LETTERS
• 影响因子: 8.6
• 作者: Jaeger, Simon B.;Schmit, Tom;Betzholz, Ralf
• 通讯作者: Betzholz, Ralf