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值纳米机械谐振器是量子光力学实验的基石，能够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量子光力学的新领域。 Q 扭转纳米谐振器，解决基础和应用研究机会，一个关键目标是启动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，但作为子领域并行发展。量子光子学和量子光学的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，首席研究员还将为量子信息科学与工程硕士课程开发一门实验室课程。该课程涵盖从单光子探测到稀释制冷等技术，将满足量子工作者对实践经验日益增长的需求。该研究项目包括三个项目首先，将探索基于成像的量子光力学的新领域，用激光偏转测量（光杠杆方法）取代传统的干涉测量。一个关键目标是观察扭矩中的辐射压力散粒噪声并研究其对反射光场量子态的影响。其次，将开发基于质量负载频率跟踪的紧凑摆重力计。纳米带。第三，采用先进的工程技术，将开发出扭转品质因数超过 10 亿的纳米带，并与量子极限偏转测量相结合。将尝试将纳米机械振荡器从室温冷却到基态，这对量子技术和教学工具都很感兴趣。该奖项是 NSF 的法定使命，并被认为值得支持通过使用基金会的智力优点和更广泛的影响审查标准进行评估。