Study of Bose-Einstein condensate of magnons by means of fs-laser Faraday magnetometry

飞秒激光法拉第磁强计研究磁振子玻色-爱因斯坦凝聚体

• 批准号: 183069271
• 负责人: Professor Dr. Sergej O. Demokritov, Ph.D.
• 金额: --
• 依托单位: Institute for Molecules and Materials
• 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/183069271?language=en
• 关键词: Study; Bose; Einstein; condensate; magnons

Subject of this project is the experimental investigation of the degree of coherence in the Bose-Einstein condensate – a recently discovered novel state of a magnon gas. A combined heterodyne scheme employing a repetitive sequence of fs-laser pulses, allowing an ultimate frequency resolution, will be applied as the experimental tool. The main question to answer will be: how the finite lifetime of magnons and their mutual interaction influences the coherent properties of the condensate. Here we plan to join the expertise of the Münster Group in experimental study of coherent magnon states with the excellence of the Nijmegen Group in investigation and manipulation of high frequency dynamics, magneto-optics and opto-magnetism.

该项目的主题是对玻色-爱因斯坦凝聚体的相干程度的实验研究-最近发现的磁振子气体的新状态。采用重复序列的飞秒激光脉冲，允许一个最终的频率分辨率的组合外差方案，将被应用作为实验工具。要回答的主要问题是：如何有限的寿命的磁振子和他们的相互作用影响凝聚的相干性质。在这里，我们计划加入明斯特集团在相干磁振子态实验研究方面的专业知识，以及奈梅亨集团在高频动力学、磁光和光磁研究和操纵方面的卓越成就。