Rydberg atoms in confined geometries - Experiment and Theory

受限几何结构中的里德伯原子 - 实验与理论

• 批准号: 252404023
• 负责人: Dr. Robert Löw
• 金额: --
• 依托单位: Institut für Physik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2014
• 资助国家: 德国
• 起止时间: 2013-12-31 至 2017-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/252404023?language=en
• 关键词: Rydberg; atoms; confined; geometries; Experiment

The control over the internal and external degrees of atoms has reached a level of precision that allows for technical applications superior to solid state devices. The most prominent example is the cesium atom clock, which sets the time reference for the entire planet. In combination with the definition of the speed of light it is also the origin of the meter; thus the measurement of space and time is based on controlling atoms. Atoms can further serve as sensitive probes for magnetic, electric and electromagnetic fields, gravitation, acceleration and rotation. When adding the capability of atomic gases to generate, delay, store and modify light fields, it becomes evident that many more atom-based devices are set to enter our everyday life. A landmark is set by the chip scale atomic clock (CSAC) by Symmetricom, in which all components have been miniaturized to make it integrable and compatible with current technologies present in industry. However, miniaturization can sometimes also be a burden, given that much closer confining walls are more likely to interact with the atoms in an unwanted way.The scientific questions to be answered in this proposal are on the one hand how to minimise the coupling of atoms to a nearby surface, and on the other hand the active use of the surface to mediate interactions between (Rydberg) atoms. The main topic to be addressed here are the interactions of cesium atoms with dielectric materials. The level of optical excitation of the atoms will cover low-lying states as well as highly excited Rydberg states. The experiments will work with thermal atoms at room temperature. Our choice of dielectric materials is mainly driven by device applications. We are mostly interested in quartz glass, which is the standard material for vapour cells. An especially important material for our investigations is diamond, as the absence of optical excitations in the infrared and far-infrared meets the needs of Rydberg atoms, which exhibit strong dipole transitions in this range of wavelengths.In a further processing step we can alter the spectra of excitations in the solid by tailoring material properties such as material thickness, arrangement of layers etc. to either suppress or enhance the atom-wall coupling. The latter might be beneficial for all effects relying on optical saturation by increasing the light scattering rate where the absence or at least the accurate knowledge of the coupling is desirable for most sensing applications.The proposal brings together two groups at the Universities of Stuttgart and Rostock with world-leading expertise in experimental Rydberg physics (Stuttgart) and theoretical atom-surface physics (Rostock). The combined effort promises to yield new insights into coherent manipulation of atoms in confined geometries.

对原子的内部和外部程度的控制已经达到了一定程度的精确度，该水平允许技术应用优于固态设备。最突出的例子是Cesium Atom时钟，该时钟设置了整个星球的时间参考。结合光速的定义，它也是仪表的起源。因此，空间和时间的测量基于控制原子。原子可以进一步用作磁性，电磁场，引力，加速和旋转的敏感探针。当添加原子气体生成，延迟，存储和修改光场的能力时，很明显，更多的基于原子的设备可以进入我们的日常生活。地标是由ChIP量表原子钟（CSAC）通过Symmetricom设置的，其中所有组件都经过小型化，以使其与行业中当前的技术兼容。但是，鉴于更接近隔离墙更有可能以不必要的方式与原子相互作用。这里要解决的主要主题是剖宫产与介电材料的相互作用。原子的光激发水平将涵盖低洼状态以及高度激发的Rydberg状态。实验将在室温下与热原子一起使用。我们选择的介电材料主要由设备应用驱动。我们最感兴趣的是石英玻璃，这是蒸气细胞的标准材料。钻石是钻石，因为在红外和远红外没有光学激发，满足了rydberg原子的需求，在这一范围内，在这一范围内，它们在这一范围内表现出强大的偶极转变。在进一步的处理步骤中，我们可以通过抑制材料的固定材料来改变固体的固体材料，以便在材料厚度等固定材料等上，或者在材料厚度上构建材料，以便在材料厚度上等等，或者在材料厚度上繁殖，或者在材料厚度上，或者在材料上繁殖。后者可能对依赖光学饱和度的所有效果都有益，而在大多数感应应用中，缺乏或至少对耦合的准确知识是可取的。该提案将Stuttgart和Rostock大学的两组汇集在一起​​，并在实验Rydberg Phystical（Stutberg Phystical）（Stutterical Physteartical（Stutberg Phystical）中（stutterigation）（Stutberg ate）（Stutberg Phystical）（stuttertaltical cation）（Stuttect atterigation）（stutterical atterigation）。综合努力有望产生新的见解，以实现对原子的连贯操纵。

项目成果

Coupling thermal atomic vapor to an integrated ring resonator

• DOI: 10.1088/1367-2630/18/10/103031
• 发表时间: 2016-10-21
• 期刊: NEW JOURNAL OF PHYSICS
• 影响因子: 3.3
• 作者: Ritter, R.;Gruhler, N.;Loew, R.
• 通讯作者: Loew, R.

Atomic vapor spectroscopy in integrated photonic structures

• DOI: 10.1063/1.4927172
• 发表时间: 2015-07-27
• 期刊: APPLIED PHYSICS LETTERS
• 影响因子: 4
• 作者: Ritter, Ralf;Gruhler, Nico;Loew, Robert
• 通讯作者: Loew, Robert

Coupling Thermal Atomic Vapor to Slot Waveguides

• DOI: 10.1103/physrevx.8.021032
• 发表时间: 2018-05
• 期刊: Physical Review X
• 影响因子: 12.5
• 作者: R. Ritter;N. Gruhler;Helge Dobbertin;H. Kübler;S. Scheel;W. Pernice;T. Pfau;R. Löw