Decay, scattering, and decoherence in many-body quanum systems

多体量子系统中的衰变、散射和退相干

基本信息

项目摘要

Under the specific scattering perspective of the Forschergruppe, we focus on systems where complex dynamics result from particle-particle interactions. In particular, we will study the paradigmatic cases of interacting bosons in optical lattices and the three-body Coulomb problem. Both these cases exhibit characteristic features of open quantum systems, such as the loss of particles to the multi-particle continuum, the exchange of energy with a probe particle or interaction-induced decoherence. We seek a microscopic theory for these phenomena.In the first part of the project, we will examine the decay of interacting bosons trapped inside an optical lattice, which may escape from the lattice by tunneling to the many-body continuum. For this purpose, we will pursue an approximate master-equation ansatz, but also rely on exact numerical techniques such as complex dilation, as we have already applied it to the three-body Coulomb problem.In the second part, we will study inelastic scattering from Bose-Einstein condensates (BECs) confined in small lattices, with the purpose of probing the BEC by a scattering particle without destroying the condensate. In particular, we want to understand how the regular, mixed, or chaotic phase-space structure underlying the BEC’s quantum dynamics is reflected in the scattering process and explore the possibility of a random matrix theory modeling.In the third part of the project, we will investigate the interaction-induced decay of atomic Bloch oscillations on tilted optical lattices, focusing on that regime where the many-body level statistics is chaotic. Specifically, we want to understand how these spectral properties control the loss of coherence.
在特定的散射的Forschergruppe的角度来看,我们专注于系统的复杂动力学粒子粒子相互作用的结果。特别地,我们将研究光晶格中相互作用玻色子的典型情况和三体库仑问题。这两种情况都表现出开放量子系统的特征,例如粒子损失到多粒子连续体,与探测粒子的能量交换或相互作用引起的退相干。我们寻求这些现象的微观理论。在项目的第一部分,我们将研究被困在光学晶格中的相互作用玻色子的衰变,这些玻色子可能通过隧穿到多体连续体而从晶格中逃逸。为了达到这个目的,我们将寻求一个近似的主方程解,但也依赖于精确的数值技术,如复数膨胀,因为我们已经将其应用于三体库仑问题。在第二部分中,我们将研究限制在小格子中的玻色-爱因斯坦凝聚体(BEC)的非弹性散射,目的是通过散射粒子探测BEC而不破坏凝聚体。特别是,我们希望了解BEC量子动力学的规则、混合或混沌相空间结构如何反映在散射过程中,并探索随机矩阵理论建模的可能性。在项目的第三部分,我们将研究倾斜光学晶格上原子布洛赫振荡的相互作用诱导衰减,重点关注多体能级统计是混沌的区域。具体来说,我们想了解这些光谱特性如何控制相干性的损失。

项目成果

期刊论文数量(5)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Unsharp continuous measurement of a Bose-Einstein condensate: Full quantum state estimation and the transition to classicality
  • DOI:
    10.1103/physreva.86.033624
  • 发表时间:
    2012-06
  • 期刊:
  • 影响因子:
    2.9
  • 作者:
    M. Hiller;M. Rehn;Francesco Petruccione;A. Buchleitner;T. Konrad
  • 通讯作者:
    M. Hiller;M. Rehn;Francesco Petruccione;A. Buchleitner;T. Konrad
Scattering laser light on cold atoms: Toward multiple scattering signals from single-atom responses
在冷原子上散射激光:从单原子响应中获得多重散射信号
  • DOI:
    10.1103/physreva.82.013832
  • 发表时间:
    2010
  • 期刊:
  • 影响因子:
    2.9
  • 作者:
    Thomas Wellens;Tobias Geiger;Vyacheslav Shatokhin;Andreas Buchleitner
  • 通讯作者:
    Andreas Buchleitner
Quantum dynamics in the bosonic Josephson junction
  • DOI:
    10.1103/physreva.82.053617
  • 发表时间:
    2010-11-17
  • 期刊:
  • 影响因子:
    2.9
  • 作者:
    Chuchem, Maya;Smith-Mannschott, Katrina;Cohen, Doron
  • 通讯作者:
    Cohen, Doron
Limits to multipartite entanglement generation with bosons and fermions
  • DOI:
    10.1103/physreva.87.022319
  • 发表时间:
    2012-10
  • 期刊:
  • 影响因子:
    2.9
  • 作者:
    M. Tichy;F. Mintert;A. Buchleitner
  • 通讯作者:
    M. Tichy;F. Mintert;A. Buchleitner
Tunneling decay of two interacting bosons in an asymmetric double-well potential: A spectral approach
  • DOI:
    10.1103/physreva.87.043626
  • 发表时间:
    2013-04-19
  • 期刊:
  • 影响因子:
    2.9
  • 作者:
    Hunn, Stefan;Zimmermann, Klaus;Buchleitner, Andreas
  • 通讯作者:
    Buchleitner, Andreas
{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ monograph.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ sciAawards.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ conferencePapers.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ patent.updateTime }}

Professor Dr. Andreas Buchleitner其他文献

Professor Dr. Andreas Buchleitner的其他文献

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

{{ truncateString('Professor Dr. Andreas Buchleitner', 18)}}的其他基金

Transport and entanglement of orbital angular momentum photonic states in turbulent atmosphere
湍流大气中轨道角动量光子态的传输和纠缠
  • 批准号:
    289382917
  • 财政年份:
    2015
  • 资助金额:
    --
  • 项目类别:
    Research Grants
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
  • 财政年份:
    2011
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Pump-probe approach to multiple scattering of intense laser light from cold atoms
泵浦探针方法对来自冷原子的强激光进行多次散射
  • 批准号:
    193945900
  • 财政年份:
    2011
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Coherent transport of waves in disordered systems with nonlinearity and interactions
具有非线性和相互作用的无序系统中波的相干传输
  • 批准号:
    163842026
  • 财政年份:
    2010
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Coherent backscattering of light by saturated atoms
饱和原子对光的相干反向散射
  • 批准号:
    118966434
  • 财政年份:
    2009
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Spectral properties of interacting cold atoms in optical lattices
光学晶格中相互作用的冷原子的光谱特性
  • 批准号:
    5454459
  • 财政年份:
    2005
  • 资助金额:
    --
  • 项目类别:
    Priority Programmes
A Statistical Approach to Quantum Many-Body Eigenstates near Criticality: Multifractality in Hilbert Space
接近临界点的量子多体本征态的统计方法:希尔伯特空间中的多重分形
  • 批准号:
    402552777
  • 财政年份:
  • 资助金额:
    --
  • 项目类别:
    Research Grants

相似国自然基金

Lagrangian origin of geometric approaches to scattering amplitudes
  • 批准号:
    24ZR1450600
  • 批准年份:
    2024
  • 资助金额:
    0.0 万元
  • 项目类别:
    省市级项目
微波有源Scattering dark state粒子的理论及应用研究
  • 批准号:
    61701437
  • 批准年份:
    2017
  • 资助金额:
    28.0 万元
  • 项目类别:
    青年科学基金项目

相似海外基金

In-situ X-ray Scattering Studies of Oxide Epitaxial Growth Kinetics and Dynamics
氧化物外延生长动力学和动力学的原位 X 射线散射研究
  • 批准号:
    2336506
  • 财政年份:
    2024
  • 资助金额:
    --
  • 项目类别:
    Continuing Grant
Unveiling magnetic structure of long-range ordered quasicrystals and approximant crystals via X-ray Resonant Magnetic Scattering method
通过X射线共振磁散射法揭示长程有序准晶和近似晶体的磁结构
  • 批准号:
    24K17016
  • 财政年份:
    2024
  • 资助金额:
    --
  • 项目类别:
    Grant-in-Aid for Early-Career Scientists
Spectroscopic Detection of Magnetic Scattering and Quasiparticles at Atomic Resolution in the Electron Microscope
电子显微镜中原子分辨率的磁散射和准粒子的光谱检测
  • 批准号:
    EP/Z531194/1
  • 财政年份:
    2024
  • 资助金额:
    --
  • 项目类别:
    Research Grant
CAREER: Neural Computational Imaging - A Path Towards Seeing Through Scattering
职业:神经计算成像——透视散射的途径
  • 批准号:
    2339616
  • 财政年份:
    2024
  • 资助金额:
    --
  • 项目类别:
    Continuing Grant
Advanced Raman Spectroscopy for Exhaled Breath Analysis for Lung Cancer Detection
用于肺癌检测的呼出气体分析的先进拉曼光谱
  • 批准号:
    494958
  • 财政年份:
    2023
  • 资助金额:
    --
  • 项目类别:
    Operating Grants
Development of a new EBSD analysis method combining dynamical scattering theory and machine learning
结合动态散射理论和机器学习开发新的 EBSD 分析方法
  • 批准号:
    23H01276
  • 财政年份:
    2023
  • 资助金额:
    --
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
A Study on the correlation bewteen the hierarchical structure of foods and texture by synchrotron X-ray scattering method
同步辐射X射线散射法研究食品层次结构与质地的相关性
  • 批准号:
    23K05124
  • 财政年份:
    2023
  • 资助金额:
    --
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
CAREER: Unravelling the Strong Interaction with High-Energy Nuclear Scattering
职业生涯:揭示高能核散射的强相互作用
  • 批准号:
    2239274
  • 财政年份:
    2023
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Elucidation of surface proton hopping conduction mechanism using neutron quasi-elastic scattering measurements
使用中子准弹性散射测量阐明表面质子跳跃传导机制
  • 批准号:
    23K17937
  • 财政年份:
    2023
  • 资助金额:
    --
  • 项目类别:
    Grant-in-Aid for Challenging Research (Exploratory)
Inducing Off-pathway Assembly of HIV Gag Polyprotein with Computationally Designed Peptides
用计算设计的肽诱导 HIV Gag 多蛋白的非途径组装
  • 批准号:
    10724495
  • 财政年份:
    2023
  • 资助金额:
    --
  • 项目类别:
{{ showInfoDetail.title }}

作者:{{ showInfoDetail.author }}

知道了