How Does a Bose-Einstein Condensate Develop Phase?

玻色-爱因斯坦凝聚态如何形成相？

• 批准号: DP0343910
• 负责人: Prof Andrew Truscott
• 金额: $ 29.39万
• 依托单位: The Australian National University
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2003
• 资助国家: 澳大利亚
• 起止时间: 2003-01-01 至 2007-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP0343910
• 关键词: How; Does; Bose; Einstein; Condensate

The demonstration of Bose-Einstein Condensation in 1995 was a major milestone in physics. When atoms are extremely cold, their de Broglie wavelengths can overlap, forming a single macroscopic quantum fluid with well defined phase. Theorists have long pondered the origins of this phase. In this experimental program we aim to answer for the first time the intriguing question: "How does a BEC develop phase?". The answer will also be important for the recently developed atom laser - with potential applications as wide-reaching as the laser - where understanding the phase coherence is important for devices such as atom interferometers.

1995年玻色-爱因斯坦凝聚的证明是物理学的一个重要里程碑。 当原子处于极冷状态时，它们的布罗意波长会重叠，形成一种具有明确相位的宏观量子流体。理论家们长期以来一直在思考这个阶段的起源。 在这个实验计划中，我们的目标是首次回答这个有趣的问题：“BEC如何发展阶段？". 这个答案对于最近开发的原子激光器也很重要--它的潜在应用与激光器一样广泛--在原子激光器中，理解相位相干性对于原子干涉仪等设备很重要。