CAREER: Nanomechanics in the Quantum Regime

职业：量子体系中的纳米力学

• 批准号: 0449670
• 负责人: Pritiraj Mohanty
• 金额: $ 42.5万
• 依托单位: Trustees of Boston University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-04-01 至 2010-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0449670&HistoricalAwards=false
• 关键词: CAREER; Nanomechanics; Quantum; Regime

This Faculty Early Career Development (CAREER) project focuses on the realization of quantum motion in macroscopic nanomechanical oscillators at millikelvin temperatures. Detection of quantum mechanical displacement of a macroscopic system is fundamentally important to the foundations of quantum mechanics, quantum information processing, and condensed matter physics. To realize the textbook quantum-"mechanical" harmonic oscillator, this project will use novel approaches to design structures with gigahertz-range resonance frequencies and novel microwave measurement techniques with unprecedented levels of displacement detection sensitivity. With the measurements of quantum motion in nanomechanical oscillators, this project will explore quantum mechanics in the macroscopic realm through energy quantization, macroscopic superposition of Schrodinger cat states, and decoherence in the quantum-to-classical crossover regime. Education of students towards their eventual placement in the emerging field of nanotechnology is an essential component of this project. Students will be trained on cutting-edge technologies of nanofabrication and ultra-sensitive measurements, and fundamental concepts of quantum physics. Observation of quantum effects in macroscopic objects is paramount to defining the limits of quantum mechanics. Towards this end, the central emphasis has been on the realization of the so-called Schrodinger's Cat States with "Macroscopic Realism". This Faculty Early Career Development (CAREER) project at Boston University focuses on the realization of macroscopic quantum states with nanomechanical oscillators at millikelvin temperatures. In order to access the quantum regime of mechanical motion, innovative multi-element structure design approaches and ultra-sensitive microwave measurement techniques will be employed. Using the novel antenna design of nanomechanical structures with gigahertz-range resonance frequencies, developed recently at Boston University, this research will investigate energy quantization, quantum superposition and quantum-to-classical crossover effects in macroscopic nanomechanical oscillators. This project will train postdoctoral, graduate and undergraduate students, who will benefit from their education in the cutting-edge technologies in nanoscience and the exposure to the foundations of quantum mechanics and quantum information science.

这个教师早期职业发展（CAREER）项目的重点是在毫开尔文温度下实现宏观纳米机械振荡器中的量子运动。 宏观系统的量子力学位移的检测对于量子力学、量子信息处理和凝聚态物理学的基础是至关重要的。为了实现教科书量子“机械”谐振子，该项目将使用新的方法来设计具有千兆赫兹范围谐振频率的结构和具有前所未有的位移检测灵敏度的新型微波测量技术。透过奈米机械振子的量子运动量测，本计画将透过能量量子化、薛定谔猫态的宏观叠加，以及量子与经典交叉领域的退相干，来探讨宏观领域的量子力学。教育学生走向他们的最终安置在新兴领域的纳米技术是这个项目的一个重要组成部分。学生将接受纳米纤维和超灵敏测量的尖端技术以及量子物理学的基本概念的培训。在宏观物体中观察量子效应对于定义量子力学的极限至关重要。为此，中心的重点一直是实现所谓的薛定谔的猫国家与“宏观现实主义”。波士顿大学的这个教师早期职业发展（CAREER）项目专注于在毫开尔文温度下用纳米机械振荡器实现宏观量子态。为了进入机械运动的量子状态，将采用创新的多元件结构设计方法和超灵敏的微波测量技术。利用波士顿大学最近开发的具有千兆赫兹范围谐振频率的纳米机械结构的新型天线设计，本研究将研究宏观纳米机械振荡器中的能量量子化，量子叠加和量子到经典交叉效应。该项目将培养博士后，研究生和本科生，他们将受益于纳米科学前沿技术的教育以及量子力学和量子信息科学的基础。