Exploring Open Channel Operations with Atomic Qubits as A Processing and Measurement Resource

探索使用原子量子位作为处理和测量资源的开放通道操作

• 批准号: 2207985
• 负责人: Wesley Campbell
• 金额: $ 47.26万
• 依托单位: University of California-Los Angeles
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-08-01 至 2025-07-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2207985&HistoricalAwards=false
• 关键词: Exploring; Open; Channel; Operations; Atomic

Physicists tend to adhere to a broad notion that quantum mechanical effects tend to appear when physical systems are very small and very cold (compared to something called Planck’s constant). More recently, however, as technology has allowed us to routinely work with individual atoms (very small) using laser cooling (very cold), we have a better understanding of how information flows between the environment and the system under study. This has revealed some loopholes in the expectation that hot systems are necessarily non-quantum. This research program is exploring some of the ways that well-controlled dissipation, a potentially hot and typically classical process, can help us to control and use quantum systems for measurement and computation. For this, the group will use a single atom levitated in a vacuum chamber and study how "hot" things like sunlight shining directly on the atom can be cleverly employed to cool the atom to nearly absolute zero for quantum information applications that will help us advance scientific understanding and harness quantum information for the greater good.As the size, complexity, and precision of quantum devices employed in practical applications grows, these instruments push closer to the fuzzy boundary between thermodynamic and unitary behavior. A dual challenge arises to improve practical instruments and better understand the transition between the statistical and quantum realms. This program will explore these challenges using trapped atomic ions with long-lived metastable electronic states (a highly quantized subsystem) interacting with classical light from lasers and thermal sources (a highly classical subsystem). This project will address three key questions: 1) Can more powerful trapped atom processors or sensors be created by tapping into the larger resource of available stable atomic levels? 2) How can the nearly ideal projective null measurements (PNMs) in such a system enable new processing primitives? and 3) What happens when these quantum measurements are pushed toward the classical regime by bringing the system into contact with a hot, thermal reservoir such as the sun?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.

物理学家倾向于坚持一个广泛的概念，即当物理系统非常小且非常冷时（与普朗克常数相比），量子力学效应往往会出现。然而，最近，随着技术使我们能够常规地处理单个原子（非常小）使用激光冷却（非常冷），我们可以更好地了解信息如何在环境和所研究的系统之间流动，这揭示了热系统必然是非量子的预期中的一些漏洞。探索一些方法良好控制的耗散是一种潜在的热且典型的经典过程，可以帮助我们控制和使用量子系统进行测量和计算，为此，该小组将使用悬浮在真空室中的单个原子并研究事物的“热”程度。就像阳光直接照射在原子上一样，可以巧妙地利用将原子冷却到几乎绝对为零的量子信息应用，这将有助于我们推进科学理解并利用量子信息来实现更大的利益。随着量子设备的尺寸、复杂性和精度随着实际应用的不断增长，这些仪器进一步接近热力学和单一行为之间的模糊边界，是为了改进实用仪器并更好地理解统计领域和量子领域之间的转变，该计划将利用具有长寿命亚稳态电子态的捕获原子离子来探索这些挑战。该项目将解决三个关键问题：1）能否通过利用更大的可用稳定资源来创建更强大的捕获原子处理器或传感器。 2）这样的系统中近乎理想的投影零测量（PNM）如何启用新的处理原语？3）当通过使系统与热的接触将这些量子测量推向经典状态时会发生什么？像太阳这样的热储层？该奖项反映了 NSF 的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。