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Quantum Optics with Atomic Ensembles and Arrays

具有原子系综和阵列的量子光学

基本信息

批准号：
1912494
负责人：
Alexander Kuzmich
金额：
$ 63.88万
依托单位：
Regents of the University of Michigan - Ann Arbor
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2019
资助国家：
美国
起止时间：
2019-09-01 至 2023-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1912494&HistoricalAwards=false
关键词：
Quantum Optics Atomic Ensembles Arrays

项目摘要

This research will explore the creation and motion of many-particle quantum states using ultra-cold atoms trapped in focused laser beams. When these atoms are placed into highly-excited (Rydberg) atomic states, they interact with each other strongly, rapidly leading to a situation in which many atoms are interconnected in a very fundamental way (so-called "quantum entanglement). Subsequent evolution and decoherence (removal of the entanglement) of atomic states will be studied. Efficient production of multi-particle entangled states will impact fundamental physics investigations and advance quantum-enhanced measurement techniques. This research will also inform emerging technological applications of quantum computation and communication, quantum sensors for navigation and magnetometry, and atomic clocks. The experiments feature an array of individual atoms and atomic ensembles cooled to microKelvin temperatures, each confined by a strongly focused laser beam. The frequency of the trapping field is chosen such that confinement is state-insensitive with respect to ground and Rydberg atomic levels. This approach allows for controlled evolution of strongly-interacting atoms, permitting generation of multi-atom entangled states on the timescale of tens of microseconds and allowing for second-scale entanglement storage within ground hyperfine manifolds. Methods of creating and controlling highly-entangled states and their applications to quantum-limited metrology will be explored.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.

这项研究将探索使用聚焦激光束中捕获的超冷原子来创建和运动多粒子量子态。当这些原子被置于高激发态（里德堡态）时，它们彼此强烈地相互作用，迅速导致许多原子以非常基本的方式相互连接的情况（所谓的“量子纠缠”）。随后的演化和退相干（消除纠缠）的原子态将被研究。多粒子纠缠态的有效产生将影响基础物理研究和推进量子增强测量技术。这项研究还将为量子计算和通信、导航和磁力测量的量子传感器以及原子钟的新兴技术应用提供信息。这些实验的特点是一系列冷却到微开尔文温度的单个原子和原子系综，每个原子和原子系综都受到强聚焦激光束的限制。选择捕获场的频率，使得限制相对于地和里德伯原子能级是状态不敏感的。这种方法允许强相互作用原子的受控演化，允许在数十微秒的时间尺度上产生多原子纠缠态，并允许在地面超精细流形内进行第二尺度纠缠存储。该奖项反映了NSF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。