Rotational Spin-Optomechanics in an Ion Trap

离子阱中的旋转自旋光力学

基本信息

批准号：
2110591
负责人：
Tongcang Li
金额：
$ 38.06万
依托单位：
Purdue University
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2021
资助国家：
美国
起止时间：
2021-09-01 至 2024-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2110591&HistoricalAwards=false
关键词：
Rotational Spin Optomechanics Ion Trap

项目摘要

General audience abstract:As it becomes more and more challenging to increase the energy of particle accelerators to explore new physics, precision measurements provide an attractive approach to probe fundamental questions in physics. Levitated dielectric particles in high vacuum are ultrasensitive devices and have the potential to test the limits of quantum mechanics and to search for dark matter and dark energy. This project will develop an ultrasensitive levitated system with a nanodiamond in an ion trap. A levitated nanodiamond with a built-in spin qubit can be considered as a massive artificial atom. It will be used to study the quantum geometric phase due to fast rotation and to develop a rotational nanoparticle matter-wave interferometer for precision measurements and macroscopic quantum mechanics. The project will support the training of graduate students during the research. Essential research results will be integrated into the course taught by the PI for senior undergraduate students and graduate students. The PI will co-organize “Nanodays” and “Physics Inside Out” outreach events for K-12 students near Purdue University, and cooperate with other professionals to do outreach that combines science, art, and other fields to convey science to broad audiences.Technical audience abstract:This project will investigate rotational spin-optomechanics with a levitated nanodiamond in an ion trap. Theoretical investigations have suggested that a nanodiamond matter-wave interferometer would potentially test the limits of quantum mechanics and probe quantum gravity. However, a significant obstacle to creating quantum superposition states of an optically levitated nanodiamond is laser heating. In this project, the PI’s group will address this critical issue by using an ion trap to minimize heating and optical refrigeration to cool the internal temperature of a nanodiamond. A nanodiamond with a built-in spin qubit will be driven to rotate at high speed for studying both adiabatic and non-adiabatic quantum geometric phases. Besides, a non-Abelian 3D rotation will provide the opportunity to study the non-Abelian geometric phase. The system developed in this project will be important for quantum sensing and fundamental physics. This project will build on the recent accomplishments of the PI’s group, which has observed electron spin resonance of optically levitated nanodiamonds in a vacuum, driven a nanoparticle to rotate at a record high speed and created an ultrasensitive torque detector.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.

普通受众摘要：随着增加粒子加速器探索新物理学的能量变得越来越挑战，精度测量为探测物理学基本问题提供了有吸引力的方法。高真空吸尘器中的悬浮饮食颗粒是超敏的设备，有可能测试量子力学的极限并寻找暗物质和暗能量。该项目将开发一个超敏感的悬浮系统，并在离子陷阱中使用纳米座。带有内置自旋定量的悬浮纳米座座可被视为庞大的人造原子。由于快速旋转，它将用于研究量子几何阶段，并开发旋转纳米粒子物质波干扰，以进行精确测量和宏观量子力学。该项目将在研究期间支持研究生的培训。基本的研究结果将纳入PI为高级本科生和研究生提供的课程中。 PI将为Purdue University附近的K-12学生共同组织“ Nanodays”和“ Inside Insides Out Out”外展活动，并与其他专业人员进行指导，以将科学，艺术和其他领域结合起来，以将科学传达给广泛的受众群体。技术摘要：该项目将与levitated Nananodiamondiamondiamondiamondiamonds trap iniimondiamonds iniiimondynion trap一起研究。理论研究表明，纳米符号的物质波干涉仪可能会测试量子力学和探针量子重力的极限。但是，在光悬浮的纳米座上产生量子叠加状态的重要障碍是激光加热。在该项目中，PI的组将通过使用离子陷阱来最大程度地减少加热和光学制冷以冷却纳米座的内部温度来解决这个关键问题。带有内置自旋定量的纳米座将驱动以高速旋转，以研究绝热和非绝热量子几何阶段。此外，非亚伯3D旋转将为研究非亚洲几何阶段提供机会。该项目中开发的系统对于量子灵敏度和基本物理学很重要。该项目将建立在PI小组的最新成就的基础上，该项目已经观察到电子旋转的电子旋转共振在真空中，驱使纳米颗粒以创纪录的高速旋转，并创造了超级敏感的扭矩探测器。这是NSF的法定任务和审查的范围，这表明了NSF的法规概念的范围，这是通过评估的范围来弥补的。