Interacting two-dimensional quantum gases in optical traps

光陷阱中相互作用的二维量子气体

• 批准号: 5454387
• 负责人: Professor Dr. Martin Weitz
• 金额: --
• 依托单位: Institut für Angewandte Physik
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2005
• 资助国家: 德国
• 起止时间: 2004-12-31 至 2007-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5454387?language=en
• 关键词: Interacting; two; dimensional; quantum; gases

The ability to create and manipulate atomic quantum gases in far detuned dipole potentials offers novel possibilities for the study of atomic interactions and collective quantum phenomena. In these traps, two-dimensional quantum gases can be realized and manipulated far from surfaces. In this way, novel prospects arise for the generation of quantum gases in fractional quantum Hall multiparticle states with rapidly rotating optical traps to provide a bosonic analogue of two-dimensional electron gases in strong magnetic fields. In a first step, we plan to observe quasicondensation in an array of two-dimensional optical traps. By rotating the atomic microclouds with a novel modulation technique, a fractional quantum-Hall type regime can be reached. We plan to create highly correlated quantum-Hall states in the two-dimensional traps, as the result of an effective interatomic interaction. Evidence for this correlated multiparticle regime can be obtained from the observation of collapse and revival of the interference pattern of the rotated microclouds. A perspective of this work is to detect fractional statistics. We expect that quantum gases in optical traps will be a powerful tool in the exploration of the rich physics of two-dimensional quantum systems, where novel correlated multiparticle states can be the system ground state.

在远失谐偶极势中产生和操纵原子量子气体的能力为研究原子相互作用和集体量子现象提供了新的可能性。在这些陷阱中，二维量子气体可以在远离表面的地方实现和操纵。通过这种方式，新的前景出现在分数量子霍尔多粒子态的量子气体的产生与快速旋转的光学陷阱，以提供一个玻色子模拟强磁场中的二维电子气体。 在第一步中，我们计划在二维光阱阵列中观察准凝聚。通过一种新的调制技术旋转原子微云，可以达到分数量子霍尔型制度。我们计划在二维陷阱中产生高度相关的量子霍尔态，作为有效的原子间相互作用的结果。这种相关的多粒子制度的证据可以从观察到的崩溃和复苏的旋转微云的干涉图案。这项工作的一个视角是检测分数统计量。我们期望光阱中的量子气体将成为探索二维量子系统丰富物理的有力工具，其中新颖的相关多粒子态可以是系统基态。