Correlated quantum dynamics of finite ultracold bosonic systems in traps

陷阱中有限超冷玻色子系统的相关量子动力学

• 批准号: 175351316
• 负责人: Professor Dr. Peter Schmelcher
• 金额: --
• 依托单位: Zentrum für Optische Quantentechnologien (ZOQ)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2010
• 资助国家: 德国
• 起止时间: 2009-12-31 至 2015-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/175351316?language=en
• 关键词: Correlated; quantum; dynamics; finite; ultracold

We explore the correlated quantum dynamics of weak to strongly interacting few-body bosonic ensembles with the aim to identify novel fundamental quantum dynamical processes and mechanisms. The latter constitute an important ingredient for our understanding and design of e.g. the transport properties and dynamics of more complex correlated many-body systems. Since the pathway from weak to strong correlations depends crucially on the dimensionality and the decomposition we study both one- and two-dimensional as well as pure and mixed bosonic systems. Specifically our investigations aim at the quantum dynamics of one- and two-component repulsively interacting few-boson systems, with a focus on tunneling and transport properties in finite optical lattices. We will employ an ab-initio approach, the Multi-Configuration Time-Dependent Hartree (MCTDH) method, which allows to numerically exactly determine the time-dependent as well as stationary properties, if applicable supported by corresponding analytic modeling. Our study aims at establishing and controlling novel tunneling mechanisms including their rates and timescales thereby employing different parameters such as particle numbers, lattice geometry, and interaction strength between the atoms.

我们探讨了弱到强相互作用的少体玻色系综的相关量子动力学，目的是确定新的基本量子动力学过程和机制。后者构成了一个重要的成分，我们的理解和设计，例如，更复杂的相关多体系统的输运性质和动力学。由于从弱到强的相关性的途径取决于至关重要的维度和分解，我们研究一维和二维以及纯和混合玻色子系统。具体来说，我们的调查的目的是在量子动力学的一个和两个组件排斥相互作用的少玻色子系统，重点是在有限的光学晶格中的隧道和输运性质。我们将采用从头算方法，多配置时间相关哈特里（MCTDH）方法，它允许数值上精确地确定时间相关的以及固定的属性，如果适用的话，相应的分析模型的支持。我们的研究旨在建立和控制新的隧穿机制，包括它们的速率和时间尺度，从而采用不同的参数，如粒子数，晶格几何形状和原子之间的相互作用强度。

项目成果

The impact of spatial correlation on the tunneling dynamics of few-boson mixtures in a combined triple well and harmonic trap

• DOI: 10.1088/1367-2630/14/9/093011
• 发表时间: 2011-12
• 期刊: New Journal of Physics
• 影响因子: 3.3
• 作者: Lushuai Cao;I. Brouzos;B. Chatterjee;P. Schmelcher

Ultracold dipolar few-boson ensembles in a triple-well trap

• DOI: 10.1088/0953-4075/46/8/085304
• 发表时间: 2012-12
• 期刊: Journal of Physics B: Atomic, Molecular and Optical Physics
• 作者: B. Chatterjee;I. Brouzos;Lushuai Cao;P. Schmelcher

Beyond mean-field dynamics of ultra-cold bosonic atoms in higher dimensions: facing the challenges with a multi-configurational approach

超越高维超冷玻色子原子的平均场动力学：用多配置方法应对挑战

• DOI: 10.1088/1361-6455/50/3/034003
• 发表时间: 2017
• 期刊: Journal of Physics B: Atomic, Molecular and Optical Physics
• 作者: V. Bolsinger;S. Krönke;P. Schmelcher
• 通讯作者: P. Schmelcher

Few-boson tunneling dynamics of strongly correlated binary mixtures in a double well

• DOI: 10.1103/physreva.85.013611
• 发表时间: 2011-05
• 期刊: Physical Review A
• 影响因子: 2.9
• 作者: B. Chatterjee;I. Brouzos;Lushuai Cao;P. Schmelcher