Optical Lattice Engineering for Enhanced Interferometry and Sensing with Yb Atoms

用于增强 Yb 原子干涉测量和传感的光学晶格工程

基本信息

  • 批准号:
    2110164
  • 负责人:
  • 金额:
    $ 54.73万
  • 依托单位:
  • 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:
    2021-08-01 至 2025-07-31
  • 项目状态:
    未结题

项目摘要

General audience abstract:This award supports a project to sensitively measure the interaction between light and matter. The experiments will be performed on an atomic gas cooled to very low temperatures in the laboratory, at which point it transforms into an exotic state called a Bose-Einstein condensate (BEC). Like a laser beam, the BEC can be split into multiple parts and then recombined. If the different parts interact differently with light, then this shows up in the properties of the recombined BEC. The splitting and recombination will be carried out with a particular type of light pulses called standing waves, which the research team will specially prepare to enhance the measurement sensitivity. By using light pulses to split, recombine, and then observe BECs, the team will precisely measure the strength of the light-matter interaction. The results will provide information regarding possible refinements of the underlying theory of this fundamental process. The atom being used - Ytterbium - has potential applications in the development of improved time standards for the global positioning system (GPS) and in the development of quantum computers; both of these efforts involve the sorts of laser-atom control techniques that this project will help to advance. The students working on this project will gain experience in experimental methods involving atoms, lasers, and electronics, and also be involved in data analysis, modeling, and connecting experimental results with theory. This will be good preparation for them to join the work force in academia and industry as part of the next generation of scientists and engineers. Technical audience abstract:The research team will develop techniques based on coherent atom manipulation in optical standing waves to improve the precision of atom interferometric sensors. In particular, the kinetic energy of an atom recoiling due to absorption of a single photon will be precisely measured as a frequency, by further development of the team’s previously demonstrated contrast interferometry technique with Yb BECs. This recoil frequency, combined with other measurements, will accurately determine the fine structure constant alpha, and test the theory of quantum electrodynamics (QED). The fine structure constant is ubiquitous in nature and QED theory extends across various physics sub-fields. The contrast interferometer utilizes pulsed optical standing waves to split, manipulate, and recombine BECs. The interferometer signal is obtained by monitoring the contrast of the resultant interference pattern via reflection of an optical traveling wave. The techniques that will be developed to enhance measurement precision will be broadly applicable to a large class of atom interferometric sensors including the acceleration due to gravity and its gradient. Together with these fundamental goals, this project will also advance BEC preparation, manipulation, and probing methods.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.
摘要:该奖项支持一个灵敏测量光与物质之间相互作用的项目。实验将在实验室冷却到极低温度的原子气体上进行,此时它会转变成一种称为玻色-爱因斯坦凝聚物(BEC)的奇异状态。像激光束一样,BEC可以分裂成多个部分,然后重新组合。如果不同的部分与光的相互作用不同,那么这就表现在重组BEC的性质上。分裂和重组将用一种叫做驻波的特殊类型的光脉冲进行,研究小组将专门准备这种光脉冲来提高测量灵敏度。通过使用光脉冲分裂、重组,然后观察bec,该团队将精确测量光-物质相互作用的强度。结果将提供有关这一基本过程的潜在理论的可能改进的信息。所使用的原子——镱——在开发改进的全球定位系统(GPS)时间标准和开发量子计算机方面具有潜在的应用;这两项工作都涉及到激光原子控制技术,而这一项目将有助于推进这些技术的发展。参与本项目的学生将获得原子、激光和电子学实验方法的经验,并参与数据分析、建模以及将实验结果与理论联系起来。这将为他们加入学术界和工业界的工作队伍,成为下一代科学家和工程师的一部分做好准备。技术听众摘要:研究小组将开发基于光学驻波相干原子操纵的技术,以提高原子干涉传感器的精度。特别是,由于单个光子的吸收,原子反冲的动能将通过团队先前演示的Yb BECs对比干涉测量技术的进一步发展,以频率精确测量。这种反冲频率与其他测量相结合,将准确地确定精细结构常数α,并测试量子电动力学(QED)理论。精细结构常数在自然界中是普遍存在的,QED理论扩展到各个物理子领域。对比度干涉仪利用脉冲光驻波来分裂、操纵和重组bec。干涉仪信号是通过监测光行波反射产生的干涉图样的对比度而获得的。为提高测量精度而开发的技术将广泛适用于包括重力加速度及其梯度在内的大型原子干涉传感器。与这些基本目标一起,本项目还将推进BEC的制备、操作和探测方法。该奖项反映了美国国家科学基金会的法定使命,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。

项目成果

期刊论文数量(1)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Interferometry in an Atomic Fountain with Ytterbium Bose–Einstein Condensates
  • DOI:
    10.3390/atoms9030058
  • 发表时间:
    2021-07
  • 期刊:
  • 影响因子:
    1.8
  • 作者:
    Daniel Gochnauer;Tahiyat Rahman;A. Wirth-Singh;Subhadeep Gupta
  • 通讯作者:
    Daniel Gochnauer;Tahiyat Rahman;A. Wirth-Singh;Subhadeep Gupta
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Subhadeep Gupta其他文献

Experiments with Degenerate Bose and Fermi Gases
简并玻色和费米气体的实验
  • DOI:
  • 发表时间:
    2003
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Subhadeep Gupta
  • 通讯作者:
    Subhadeep Gupta
Search for Off-Diagonal Density Matrix Elements for Atoms in a Supersonic Beam
搜索超音速束中原子的非对角密度矩阵元素
  • DOI:
  • 发表时间:
    1999
  • 期刊:
  • 影响因子:
    0
  • 作者:
    R. Rubenstein;A. Dhirani;D. Kokorowski;T. Roberts;Edward T. Smith;W. Smith;H. Bernstein;J. Lehner;Subhadeep Gupta;D. Pritchard
  • 通讯作者:
    D. Pritchard
Dynamics of Feshbach molecules in an ultracold three-component mixture
超冷三组分混合物中 Feshbach 分子的动力学
  • DOI:
    10.1103/physreva.86.032705
  • 发表时间:
    2012
  • 期刊:
  • 影响因子:
    2.9
  • 作者:
    A. Khramov;Anders C. Hansen;A. Jamison;W. Dowd;Subhadeep Gupta
  • 通讯作者:
    Subhadeep Gupta
Observation of Many-body Dynamical Delocalization in a Kicked Ultracold Gas
踢动超冷气体中多体动力学离域的观测
  • DOI:
  • 发表时间:
    2021
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Jun Hui See Toh;K. McCormick;Xinxin Tang;Ying Su;Xiwang Luo;Chuanwei Zhang;Subhadeep Gupta
  • 通讯作者:
    Subhadeep Gupta
Dynamically shaped optical dipole atom traps for rapid cooling to quantum degeneracy
动态形状的光学偶极原子陷阱,用于快速冷却至量子简并

Subhadeep Gupta的其他文献

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{{ truncateString('Subhadeep Gupta', 18)}}的其他基金

Conference: Support for Students to Attend 2022 APS-DAMOP Conference
会议:支持学生参加2022年APS-DAMOP会议
  • 批准号:
    2211126
  • 财政年份:
    2022
  • 资助金额:
    $ 54.73万
  • 项目类别:
    Standard Grant
Support for Students to Attend 2021 APS-DAMOP Conference
支持学生参加2021年APS-DAMOP会议
  • 批准号:
    2120050
  • 财政年份:
    2021
  • 资助金额:
    $ 54.73万
  • 项目类别:
    Standard Grant
REU Site: University of Washington Physics
REU 站点:华盛顿大学物理系
  • 批准号:
    1851741
  • 财政年份:
    2019
  • 资助金额:
    $ 54.73万
  • 项目类别:
    Continuing Grant
Interacting Two-Element Bose-Fermi Superfluid
相互作用的二元玻色-费米超流体
  • 批准号:
    1806212
  • 财政年份:
    2018
  • 资助金额:
    $ 54.73万
  • 项目类别:
    Standard Grant
Precision Contrast Interferometry with Ytterbium Bose-Einstein Condensates
使用镱玻色-爱因斯坦凝聚体进行精密对比干涉测量
  • 批准号:
    1707575
  • 财政年份:
    2017
  • 资助金额:
    $ 54.73万
  • 项目类别:
    Continuing Grant
REU Site: University of Washington Physics
REU 站点:华盛顿大学物理系
  • 批准号:
    1559631
  • 财政年份:
    2016
  • 资助金额:
    $ 54.73万
  • 项目类别:
    Continuing Grant
Contrast Interferometry with Quantum Degenerate Ytterbium Gases
量子简并镱气体的对比干涉测量
  • 批准号:
    1404075
  • 财政年份:
    2014
  • 资助金额:
    $ 54.73万
  • 项目类别:
    Continuing Grant
REU Site: University of Washington Physics
REU 站点:华盛顿大学物理系
  • 批准号:
    1262811
  • 财政年份:
    2013
  • 资助金额:
    $ 54.73万
  • 项目类别:
    Continuing Grant
Interacting Quantum Mixtures of Lithium and Ytterbium Atoms
锂和镱原子相互作用的量子混合物
  • 批准号:
    1306647
  • 财政年份:
    2013
  • 资助金额:
    $ 54.73万
  • 项目类别:
    Continuing Grant
REU Site: University of Washington Physics
REU 站点:华盛顿大学物理系
  • 批准号:
    1062795
  • 财政年份:
    2011
  • 资助金额:
    $ 54.73万
  • 项目类别:
    Standard Grant

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