Matter wave spectroscopy of the many-body physics in optical lattices

光学晶格中多体物理的物质波谱

• 批准号: 201192159
• 负责人: Professor Dr. Andreas Buchleitner
• 金额: --
• 依托单位: Arbeitsgruppe Quantenoptik und -statistik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2011
• 资助国家: 德国
• 起止时间: 2010-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/201192159?language=en
• 关键词: Matter; wave; spectroscopy; many; body

We seek to develop matter wave spectroscopy and interferometry for probing the many-body physics of ultracold atoms in an optical lattice. The applicants’ work, which revealed a clear dependence of matter wave scattering on the superfluid to Mott insulator phase transition [1], opens the door to studies of critical behavior of the scattering in the region of the phase transition, as well as imaging of purely quantum mechanical fluctuations and correlations. In order to accomplish the latter, we will exploit atom interferometry, in which a probe beam is accompanied by a coherent reference beam, to enable observation of quantum mechanical phases, which echo the density fluctuations in an optical lattice. Having developed a robust understanding for matter wave probes of bosonic targets, we will turn our attention to probing the distinct physics that appears in fermionic systems. Finally, we will incorporate disorder and partially filled lattices, and examine the regimes in which matter wave interference phenomena, such as Anderson localization, survive inelastic scattering of the atoms in the lattice.

我们寻求发展物质波光谱学和干涉测量学，用于探测光学晶格中超冷原子的多体物理。申请人的工作揭示了物质波散射对超流体到莫特绝缘体相变的明显依赖性[1]，为研究相变区域中散射的临界行为以及纯粹量子力学波动和相关性的成像打开了大门。为了实现后者，我们将利用原子干涉术，其中探测光束伴随着相干参考光束，以实现量子力学相位的观察，这反映了光学晶格中的密度波动。在对玻色子目标的物质波探测有了深入的了解之后，我们将把注意力转向探测费米子系统中出现的独特物理。最后，我们将把无序和部分填充晶格，并检查制度中的物质波干涉现象，如安德森本地化，生存在晶格中的原子的非弹性散射。

项目成果

Stringent and efficient assessment of boson-sampling devices.

对玻色子采样装置进行严格高效的评估

• DOI: 10.1103/physrevlett.113.020502
• 发表时间: 2014
• 期刊: Physical review letters
• 影响因子: 8.6
• 作者: M. C. Tichy;K. Mayer;A. Buchleitner;K. Mølmer
• 通讯作者: K. Mølmer

Matter-wave scattering from interacting bosons in an optical lattice

光学晶格中相互作用的玻色子的物质波散射

• DOI: 10.1103/physreva.90.023629
• 发表时间: 2014
• 期刊: Physical Review A
• 影响因子: 2.9
• 作者: K. Mayer;A. Rodriguez;A. Buchleitner
• 通讯作者: A. Buchleitner

Matter-wave scattering from strongly interacting bosons in an optical lattice

光学晶格中强相互作用玻色子的物质波散射

• DOI: 10.1103/physreva.91.053633
• 发表时间: 2015
• 期刊: arXiv: Quantum Physics
• 作者: K. Mayer;A. Rodriguez;A. Buchleitner
• 通讯作者: A. Buchleitner