Macroscopicity of mechanical quantum superpositions

机械量子叠加的宏观性

• 批准号: 298796255
• 负责人: Professor Dr. Klaus Hornberger
• 金额: --
• 依托单位: Arbeitsgruppe Theoretische Quantenphysik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2020-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/298796255?language=en
• 关键词: Macroscopicity; mechanical; quantum; superpositions

The goal of the research project is to scrutinize and validate a measure for the macroscopicity of mechanical quantum superpositions, as introduced recently by the PI's group, with regard to general many-particle states and to non-interferometric quantum tests. Specifically, we will refine the measure as a general hypothesis test within a Bayesian framework, and evaluate it for current and planned experiments involving e.g. collective excitations of cold quantum gases, elastic deformations of nanoscale solids, or Leggett-Garg violations in optical lattices. We thus hope to provide a standard for the comparison of diverse quantum experiments probing the transition to macroscopic physics.

该研究项目的目标是仔细检查和验证机械量子叠加宏观性的测量方法，正如 PI 小组最近推出的关于一般多粒子态和非干涉量子测试的方法。具体来说，我们将将该测量细化为贝叶斯框架内的一般假设检验，并针对当前和计划的实验（例如涉及实验）对其进行评估。冷量子气体的集体激发、纳米级固体的弹性变形或光学晶格中的 Leggett-Garg 破坏。因此，我们希望为探索向宏观物理过渡的不同量子实验提供一个比较标准。

项目成果

Rotational Friction and Diffusion of Quantum Rotors.

• DOI: 10.1103/physrevlett.121.040401
• 发表时间: 2017-12
• 期刊: Physical review letters
• 影响因子: 8.6
• 作者: B. Stickler;B. Schrinski;K. Hornberger

Macroscopicity of quantum mechanical superposition tests via hypothesis falsification

• DOI: 10.1103/physreva.100.032111
• 发表时间: 2019-02
• 期刊: Physical Review A
• 影响因子: 2.9
• 作者: B. Schrinski;S. Nimmrichter;B. Stickler;K. Hornberger

Quantum-classical hypothesis tests in macroscopic matter-wave interferometry

• DOI: 10.1103/physrevresearch.2.033034
• 发表时间: 2020-07-08
• 期刊: PHYSICAL REVIEW RESEARCH
• 影响因子: 4.2
• 作者: Schrinski, Bjorn;Nimmrichter, Stefan;Hornberger, Klaus
• 通讯作者: Hornberger, Klaus

Collapse-induced orientational localization of rigid rotors [Invited]

• DOI: 10.1364/josab.34.0000c1
• 发表时间: 2017-02
• 期刊: Journal of The Optical Society of America B-optical Physics
• 影响因子: 1.9
• 作者: B. Schrinski;B. Stickler;K. Hornberger

Sensing spontaneous collapse and decoherence with interfering Bose–Einstein condensates

通过干扰玻色爱因斯坦凝聚来感知自发塌缩和退相干

• DOI: 10.1088/2058-9565/aa8682
• 发表时间: 2017
• 期刊: Quantum Science and Technology
• 影响因子: 6.7
• 作者: B. Schrinski;K. Hornberger;S. Nimmrichter
• 通讯作者: S. Nimmrichter