Probing cavity quantum electrodynamics with an atomic Bose-Einstein condensate: many-body theory of atom-surface interaction; high-precision characterization of quantum and thermal field fluctuations near a surface

用原子玻色-爱因斯坦凝聚态探测腔量子电动力学：原子-表面相互作用的多体理论；

• 批准号: 34569671
• 负责人: Professor Dr. Carsten Henkel
• 金额: --
• 依托单位: Institut für Physik und Astronomie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2007
• 资助国家: 德国
• 起止时间: 2006-12-31 至 2011-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/34569671?language=en
• 关键词: Probing; cavity; quantum; electrodynamics; atomic

Ultracold atomic matter waves are currently emerging as a novel tool to explore cavity quantum electrodynamics (cQED). We propose to merge the well-known single-atom cQED with the many-body theory that is needed to describe degenerate atomic gases and Bose-Einstein condensates (BECs). We aim in particular at evaluating the manybody impact on atom-surface interactions of the van der Waals-Casimir-Polder type, inspired by recent experiments with BECs trapped near a surface. In addition, we will assess the potential of atom interferometry to detect quantum and thermal fluctuations of the van der Waals force. These will limit the coherence time of integrated devices based on neutral atom traps near surfaces, with fundamental consequences, e.g., for implementing quantum information in “atom chip” devices.

超冷原子物质波目前正在成为探索腔量子电动力学（cQED）的新工具。我们建议将著名的单原子 cQED 与描述简并原子气体和玻色-爱因斯坦凝聚体 (BEC) 所需的多体理论相结合。受到最近表面附近捕获的 BEC 实验的启发，我们的具体目标是评估范德华-卡西米尔-波尔德类型的原子-表面相互作用的多人影响。此外，我们将评估原子干涉测量法检测范德华力的量子和热涨落的潜力。这些将限制基于表面附近中性原子陷阱的集成器件的相干时间，从而产生根本性后果，例如在“原子芯片”器件中实现量子信息。

项目成果

FEYNMAN DIAGRAMS FOR DISPERSION INTERACTIONS OUT OF EQUILIBRIUM — TWO-BODY POTENTIALS FOR ATOMS WITH INITIAL EXCITATION

非平衡色散相互作用的费曼图 - 具有初始激发的原子的二体势

• DOI: 10.1142/s2010194512007465
• 发表时间: 2011
• 期刊: arXiv: Quantum Physics
• 作者: H. R. Haakh;J. Schiefele;C. Henkel
• 通讯作者: C. Henkel