CAREER: Torsional Quantum Optomechanics

职业：扭转量子光力学

• 批准号: 2239735
• 负责人: Dalziel Wilson
• 金额: $ 50.77万
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-09-01 至 2028-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2239735&HistoricalAwards=false
• 关键词: CAREER; Torsional; Quantum; Optomechanics

High-Q nanomechanical resonators are the building blocks of quantum optomechanics experiments, enabling the use of light to probe and manipulate mechanical motion at the quantum limit. This project will explore a new landscape in quantum optomechanics opened by the recent discovery of ultra-high-Q torsion nanoresonators, addressing both fundamental and applied research opportunities. A key goal is to start a dialogue between Quantum Imaging and Quantum Optomechanics fields which share common interests but have developed in parallel as subfields of Quantum Photonics and Quantum Optics. Another goal is to extend nanomechanical sensing to gravimetry, giving access to broad applications from inertial navigation to subterranean imaging. In addition to research, the principal investigator will develop a laboratory course for the Quantum Information Science and Engineering master’s program at University of Arizona. Spanning techniques from single-photon detection to dilution refrigeration, the course will answer a growing demand for hands-on experience in the quantum workforce.The research program has three thrusts, each based on reflecting a laser field from a strained silicon nitride nanoribbon possessing high Q torsion modes. First, a new field of imaging-based quantum optomechanics will be explored, with traditional interferometric measurement replaced by laser deflectometry (the optical lever method). A key goal is to observe radiation pressure shot noise in torque and study its influence on the quantum state of the reflected light field. Second, a compact pendulum gravimeter will be developed based on frequency tracking of a mass-loaded nanoribbon. The goal is a self-calibrated gravimeter with nano-g sensitivity in a chip-scale, arrayable format. Third, using advanced engineering techniques, nanoribbons with torsional quality factors exceeding 1 billion will be developed. Combined with quantum-limited deflectometry, an attempt will be made to ground state cool a nanomechanical oscillator from room temperature, of interest for both quantum technology and as a teaching tool.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.

高q纳米机械谐振器是量子光力学实验的基石，可以利用光来探测和操纵量子极限下的机械运动。该项目将探索最近发现的超高q扭转纳米谐振器开辟的量子光力学新领域，解决基础和应用研究机会。一个关键的目标是开始量子成像和量子光力学领域之间的对话，这两个领域有着共同的兴趣，但作为量子光子学和量子光学的子领域并行发展。另一个目标是将纳米机械传感扩展到重力测量，从而获得从惯性导航到地下成像的广泛应用。除了研究之外，首席研究员还将为亚利桑那大学量子信息科学与工程硕士项目开发一门实验课程。该课程涵盖了从单光子探测到稀释制冷的技术，将满足量子工作人员对实践经验日益增长的需求。该研究计划有三个推力，每个推力都基于反射来自具有高Q扭转模式的应变氮化硅纳米带的激光场。首先，将探索一个基于成像的量子光力学的新领域，用激光偏转法（光杠杆法）取代传统的干涉测量。一个关键的目标是观察扭矩中的辐射压弹噪声，并研究其对反射光场量子态的影响。其次，基于负载纳米带的频率跟踪，研制紧凑型摆重力仪。目标是一个具有纳米级灵敏度的自校准重力仪，在芯片级，可阵列格式。第三，利用先进的工程技术，开发扭转质量因子超过10亿的纳米带。结合量子有限偏转计，将尝试将纳米机械振荡器从室温基态冷却，这对量子技术和教学工具都很感兴趣。该奖项反映了美国国家科学基金会的法定使命，并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，被认为值得支持。