Relative Phase and Coherence in Bright Matter-Wave Solitons

亮物质波孤子的相对相位和相干性

• 批准号: EP/G056781/1
• 负责人: Simon Gardiner
• 金额: $ 46.01万
• 依托单位: Durham University
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2009
• 资助国家: 英国
• 起止时间: 2009 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FG056781%2F1
• 关键词: Relative; Phase; Coherence; Bright; Matter

Bright matter-wave solitons are self-stabilizing waves composed of ultracold atoms, which are robust to collisions, that is they behave in a particle-like way. They are formed from ultracold dilute atomic gases which have undergone a phase transition to a Bose-Einstein condensate, where the atoms in a sense all behave as one. Bright matter-wave solitons are observed to emerge from such an atomic Bose-Einstein condensate when, through appropriate control of magnetic fields, the atoms change from repelling one another, to feeling an attraction to one another. This process usually results in the formation of several solitons, which are generally thought to have a well-defined phase with respect to one another. In addition to their fundamental interest, bright matter-wave solitons offer advantages in matter-wave-based ideas on precision measurement. Such technologies require a source of reproducible bright matter-wave solitons and an understanding of their properties; it is therefore of crucial importance, as well as fundamental interest, to understand the process of soliton formation and soliton dynamics, particularly with regard to their phase properties and long-term stability.

明亮的物质波孤子是由超冷原子组成的自稳定波，它们对碰撞很稳定，也就是说它们的行为像粒子一样。它们是由超冷的稀释原子气体形成的，这些气体经历了向玻色-爱因斯坦凝聚物的相变，在某种意义上，原子都表现得像一个原子。明亮的物质波孤子被观察到从这样的原子玻色-爱因斯坦凝聚中出现，通过适当的磁场控制，原子从相互排斥变为相互吸引。这一过程通常会导致几个孤子的形成，这些孤子通常被认为彼此之间有一个明确的相位。除了它们的基本利益之外，明亮的物质波孤子在基于物质波的精确测量思想方面也具有优势。这样的技术需要一个可复制的明亮物质波孤子的来源，并了解它们的性质；因此，了解孤子形成和孤子动力学的过程，特别是关于它们的相性质和长期稳定性，是至关重要的，也是根本的兴趣。

项目成果

The Quantum World of Ultra-Cold Atoms and Light Book I: Foundations of Quantum Optics

超冷原子和光的量子世界第一本书：量子光学基础

• DOI: 10.1142/ca
• 发表时间: 2014
• 作者: Gardiner C

Entangling two distinguishable quantum bright solitons via collisions

通过碰撞纠缠两个可区分的量子亮孤子

• DOI: 10.1088/1742-6596/497/1/012033
• 发表时间: 2014
• 期刊: Conference Series
• 作者: Billam T

Second-order, number-conserving description of non-equilibrium dynamics in finite-temperature Bose-Einstein condensates

有限温度玻色-爱因斯坦凝聚态非平衡动力学的二阶数守恒描述

• DOI: 10.48550/arxiv.1207.2821
• 发表时间: 2012
• 作者: Billam T

Coherence and Instability in a Driven Bose-Einstein Condensate: A Fully Dynamical Number-Conserving Approach

驱动玻色-爱因斯坦凝聚体中的相干性和不稳定性：一种完全动态的数守恒方法

• DOI: 10.48550/arxiv.1104.1521
• 发表时间: 2011
• 作者: Billam T

Spontaneous Symmetry Breaking, Self-Trapping, and Josephson Oscillations

自发对称破缺、自陷和约瑟夫森振荡

• DOI: 10.1007/10091_2012_20
• 发表时间: 2013
• 作者: Billam T