CIGMA - Controlled Interactions in Quantum Gases or Metastable Atoms

我们提出了一个全面的合作努力，以推进使用亚稳原子的量子气体的研究。CIGMA的合作包括该领域几乎所有的主要实验小组以及两个强大的理论小组。我们提出的研究计划将集中在四个方面的研究：寻找玻色和费米气体中的长程关联效应，研究和控制光学晶格和偶极陷阱中原子的相互作用，寻找新的相互作用效应，如亚稳态气体中的Feshbach共振及其控制，以及超冷亚稳原子的计量学。可使用两种不同的原子物种(氦和霓虹)以及不同同位素的异核混合物来开展该方案内的工作，其中包括4个常规伙伴和1个关联伙伴。合作伙伴：达姆施塔特、巴黎/奥赛、华沙和佛罗伦萨。联合合伙人：阿姆斯特丹。其中，华沙小组纯粹是理论上的，而其他小组主要是实验性的，在奥赛节点内开展了额外的强大的理论工作。以这种CRP为代表的亚稳气体的专业知识集中在欧洲其他地方或欧洲以外的任何地方。与会小组相互了解，在其他主题上的卓有成效的合作已经存在了一段时间。通过EuroQuam倡议，根据我们的合作研究项目CIGMA的建议，通过创建一个全欧洲联盟，欧洲在亚稳原子量子气体受控相互作用领域的领导地位可以得到极大的加强。

We propose a comprehensive collaborative effort to advance the study of quantum gases using metastable atoms. The CIGMA collaboration includes almost all the major experimental groups in the field as well as two strong theory groups. The intended work is both, experimental and theoretical with strong interplay between the different experimental groups as well as between experiment and theory.The research program we propose will focus on 4 lines of research: the search for long-range correlation effects in Bose and Fermi gases, the study and control of the interaction of atoms in optical lattices and dipole traps, the search for new interaction effects such as Feshbach resonances in metastable gases and their control, and the metrology in ultracold metastable atoms. Work within this CRP can be carried out using two different atomic species (helium and neon) both providing bosonic and fermionic isotopes as well as hetero-nuclear mixtures of different isotopes.The collaboration consists of 4 regular partners and 1 associated partner. Partners: Darmstadt, Paris/Orsay, Warsaw and Florence. Associated partner: Amsterdam. Of these the Warsaw group is purely theoretical, while the other groups are primarily experimental, with additional strong theoretical work being carried out within the Orsay node.The concentration of expertise on metastable gases represented by this CRP does not exist anywhere else in Europe nor outside Europe. The participating groups know each other well, and fruitful collaborations on other topics have existed for some time. Through the EuroQuam initiative, European leadership in the field of controlled interactions in quantum gases of metastable atoms can be enormously reinforced by creating an all-European consortium as proposed by our Collaborative Research Project CIGMA.