Dynamics of Entanglement in a Trapped Ion Quantum Magnet

俘获离子量子磁体中的纠缠动力学

• 批准号: 1820885
• 负责人: Ana Rey
• 金额: $ 48万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-07-01 至 2023-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1820885&HistoricalAwards=false
• 关键词: Dynamics; Entanglement; Trapped; Ion; Quantum

One of the most important goals of modern quantum sciences is to learn how to control and entangle many-body systems and use them to make powerful and improved quantum devices, quantum materials and quantum technologies. The overall goal of this project is to develop protocols that will quantify the build-up of quantum correlations and the storage of quantum information in a crystal of trapped ions. The research effort can be placed in the context of quantum simulation: First, theory will guide experiments in regimes where theoretical predictions can be made and used to benchmark experiments. Next, experiments will be done in regimes where the dynamics are inaccessible to current theoretical methods. Finally, these experiments will push the theory and enable the development of new numerical methods capable of reproducing the observed dynamic. These investigations will be foundational to a new generation of synthetic quantum materials, not necessarily limited to trapped ions, with applications ranging from precision sensing and navigation to quantum communication and quantum information science. Moreover, the investigations will train and provide research experience to a graduate student and a postdoc. They will work with the NIST/Boulder experimental ion trap group and the theory groups at JILA and the University of Colorado at Boulder, and thus will be exposed to a highly collaborative atmosphere that will promote advances in quantum information science.The intellectual merit of the work is to develop new methods capable of describing the dynamics of quantum correlations and entanglement in trapped ion crystals. These numerical and analytic methods will be used to benchmark and guide the NIST-Boulder experiments where hundreds of cold beryllium ions are confined by a Penning trap in a two-dimensional triangular lattice geometry. In these experiments the spin degree of freedom is encoded in two hyper-fine states of the ions and the collective vibrational modes of the crystal, excited by laser beams, used to generate highly tunable long-range spin-spin interactions. By combining improved numerical techniques with better experimental protocols this team will push trapped ion experiments into a regime where they are able to create highly correlated quantum states and profit from the quantum advantage of these states for enhanced sensing and quantum information processing. These are challenging goals, but the synergy of interests and abilities of the investigators, with expertise spanning quantum optics, condensed matter physics, and theoretical and experimental atomic physics, will allow this group to delve into a broad range of problems motivated by the promise of new quantum technologies.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.

现代量子科学最重要的目标之一是学习如何控制和纠缠多体系统，并利用它们来制造强大和改进的量子设备、量子材料和量子技术。该项目的总体目标是开发协议，以量化量子相关性的建立以及捕获离子晶体中量子信息的存储。研究工作可以放在量子模拟的背景下：首先，理论将指导可以做出理论预测并用于基准实验的实验。接下来，实验将在当前理论方法无法获得动力学的情况下进行。最后，这些实验将推动该理论的发展，并能够开发能够重现所观察到的动态的新数值方法。这些研究将成为新一代合成量子材料的基础，不一定限于捕获离子，其应用范围从精密传感和导航到量子通信和量子信息科学。此外，这些调查将为研究生和博士后提供培训和研究经验。他们将与 NIST/博尔德实验离子阱小组以及 JILA 和科罗拉多大学博尔德分校的理论小组合作，因此将处于高度协作的氛围中，从而促进量子信息科学的进步。工作是开发能够描述俘获离子晶体中量子关联和纠缠动力学的新方法。这些数值和分析方法将用于基准测试和指导 NIST-Boulder 实验，其中数百个冷铍离子被二维三角晶格几何形状的潘宁陷阱限制。在这些实验中，自旋自由度被编码在离子的两个超精细状态和晶体的集体振动模式中，由激光束激发，用于产生高度可调的远程自旋-自旋相互作用。通过将改进的数值技术与更好的实验协议相结合，该团队将把俘获离子实验推向一种状态，在这种状态下，他们能够创建高度相关的量子态，并从这些状态的量子优势中获益，以增强传感和量子信息处理。这些都是具有挑战性的目标，但是研究人员的兴趣和能力的协同作用，以及跨越量子光学、凝聚态物理以及理论和实验原子物理的专业知识，将使该小组能够深入研究由承诺所激发的广泛问题。新的量子技术。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。

项目成果

Protocol for Precise Field Sensing in the Optical Domain with Cold Atoms in a Cavity

利用腔内冷原子进行光域精确场传感的协议

• DOI: 10.1103/physrevlett.124.193602
• 发表时间: 2020-05
• 期刊: Physical Review Letters
• 影响因子: 8.6
• 作者: Lewis;Barberena, Diego;Muniz, Juan A.;Cline, Julia R. K.;Young, Dylan;Thompson, James K.;Rey, Ana Maria
• 通讯作者: Rey, Ana Maria

Unifying scrambling, thermalization and entanglement through measurement of fidelity out-of-time-order correlators in the Dicke model

通过测量迪克模型中的保真度乱序相关器来统一加扰、热化和纠缠

• DOI: 10.1038/s41467-019-09436-y
• 发表时间: 2018-08-21
• 期刊: Nature Communications
• 影响因子: 16.6
• 作者: R. J. Lewis;A. Safavi;J. J. Bollinger;A. Rey
• 通讯作者: A. Rey

Verification of a Many-Ion Simulator of the Dicke Model Through Slow Quenches across a Phase Transition

通过相变慢淬火验证迪克模型的多离子模拟器

• DOI: 10.1103/physrevlett.121.040503
• 发表时间: 2018-07
• 期刊: Physical Review Letters
• 影响因子: 8.6
• 作者: Safavi;Lewis;Bohnet, J. G.;Gärttner, M.;Gilmore, K. A.;Jordan, J. E.;Cohn, J.;Freericks, J. K.;Rey, A. M.;Bollinger, J. J.
• 通讯作者: Bollinger, J. J.

Individual qubit addressing of rotating ion crystals in a Penning trap

潘宁陷阱中旋转离子晶体的单独量子位寻址

• DOI: 10.1103/physrevresearch.4.033076
• 发表时间: 2022-03-10
• 期刊: Physical Review Research
• 影响因子: 4.2
• 作者: A. Polloreno;A. Rey;J. Bollinger
• 通讯作者: J. Bollinger

Emergent Dark States from Superradiant Dynamics in Multilevel Atoms in a Cavity

腔内多能级原子超辐射动力学中出现的暗态

• DOI: 10.1103/physrevx.12.011054
• 发表时间: 2021-05-31
• 期刊: Physical Review X
• 影响因子: 12.5
• 作者: A. Piñeiro Orioli;J. K. Thompson;A. M. Rey
• 通讯作者: A. M. Rey