Subradiance and Matter Licht-Entanglement with Bose Einstein Condensates in Optical Ring Resonators

光学环形谐振器中玻色爱因斯坦凝聚的次辐射度和物质光纠缠

• 批准号: 281180353
• 负责人: Professor Dr. Claus Zimmermann
• 金额: --
• 依托单位: Physikalisches Institut
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2015
• 资助国家: 德国
• 起止时间: 2014-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/281180353?language=en
• 关键词: Subradiance; Matter; Licht; Entanglement; Bose

The combination of cold atoms and high finesse optical resonators offers an almost ideal model system for investigating fundamental aspects of atom light interaction. In the presented project, a ring resonator will be developed with a line width below the single photon recoil shift of the rubidium D2-line. By means of such a recoil resolving resonator, collective subradiant states will be generated and investigated. As second topic, resonator induced entanglement between atoms and light will be studied for various pump scenarios. For this purpose, a single atom detector will be developed which allows for observing the (2)g-correlation functions for subradiant states. The detector will also be used to study the quantum fluctuations near the CARL- threshold: Above a critical pump intensity photon scattering is suddenly increases while the atoms are strongly accelerated along the direction of the pump beam. Near this threshold, atom-light-entanglement is predicted which leads to non-classical cross-correlation functions. In particular, the question should be answered to which extend the threshold can be interpreted as a quantum phase transition.

冷原子和高精细光学谐振腔的结合为研究原子-光相互作用的基本方面提供了一个几乎理想的模型系统。在本项目中，将开发一个环形谐振腔，其线宽低于铷D2线的单光子反冲位移。利用这种反冲分辨腔，将产生和研究集体次辐射态。第二个主题是在各种泵浦情形下，研究原子与光场的共振腔诱导纠缠。为此，将开发一个单原子探测器，它允许观察（2）次辐射态的g相关函数。该探测器还将用于研究CARL阈值附近的量子涨落：当原子沿泵浦光方向沿着被强烈加速时，在临界泵浦强度以上，光子散射突然增加。在这个阈值附近，原子-光纠缠被预测为非经典的互相关函数。特别是，应该回答的问题，在何种程度上阈值可以被解释为量子相变。

项目成果

Fast In Situ Observation of Atomic Feshbach Resonances by Photoassociative Ionization.

通过光缔合电离对原子费什巴赫共振进行快速原位观察

• DOI: 10.1103/physrevlett.124.123401
• 发表时间: 2020
• 期刊: Physical review letters
• 影响因子: 8.6
• 作者: Eisele;R. A. W;Zimmermann
• 通讯作者: Zimmermann

Pinning Transition of Bose-Einstein Condensates in Optical Ring Resonators.

• DOI: 10.1103/physrevlett.121.223601
• 发表时间: 2018-03
• 期刊: Physical review letters
• 影响因子: 8.6
• 作者: S. Schuster;P. Wolf;D. Schmidt;S. Slama;C. Zimmermann

Observation of Subradiant Atomic Momentum States with Bose-Einstein Condensates in a Recoil Resolving Optical Ring Resonator.

在反冲分辨光学环形谐振器中观察玻色-爱因斯坦凝聚体的次辐射原子动量态

• DOI: 10.1103/physrevlett.121.173602
• 发表时间: 2018
• 期刊: Physical review letters
• 影响因子: 8.6
• 作者: P. Wolf;S.C. Schuster;D. Schmidt;S. Slama;C. Zimmermann
• 通讯作者: C. Zimmermann