Study of quasi-conserved quantities in atomic BEC and dilute quantum gases
原子BEC和稀量子气体中准守恒量的研究
基本信息
- 批准号:15540381
- 负责人:
- 金额:$ 2.3万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:2003
- 资助国家:日本
- 起止时间:2003 至 2006
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
We studied adiabaticity and nonlinear dynamics in the context of the manipulation and control of the Bose-Einstein condensate (BEC) made of an atomic gas. We conducted a pilot study of the mechanism for the unanticipated creation of quantum vorticies in an experiment pertaining to the construction of a beam-splitter in a BEC-interferometer. Since the numerical techniques and the computer codes required for the analysis of BEC have much in common with those for the ultra-short laser pulses and their application to atomic physics, we observed a new development by applying the techniques to the ionization of atoms in ultra-intense laser fields and to the high-harmonics generation.With a view to the representation of two-body interactions, we employed a computation scheme based on theoretical chemistry, and evaluated the mobility of an ion in a low-temperature gas of helium, thereby carrying out a dynamical analysis of the mobility and comparing it with experimental results. Quite unexpectedly, we pinned down the cause of the hitherto unsolved polarization-limit problem.In addition to such discoveries, there emerged new challenges. For instance, the transformation of an atomic pair into a molecule at ultra-low temperatures constitutes a nonlinear STIRAP problem, which is an important issue under the present theme and is all the more applicable to related problems because of the universal mathematical nature of the nonlinear STIRAP problem. We expect more challenges will appear in relation to the adiabaticity and nonlinear dynamics in many-body physics at low temperatures. A new experimental development is equally likely in the field of ultra-short laser pulses and their interactions with atoms. We look forward to contributing to further progress.
我们研究了绝热性和非线性动力学的背景下的操纵和控制的玻色-爱因斯坦凝聚体(BEC)的原子气体。我们进行了一个试点研究的机制,意外的创建量子涡旋的实验有关的建设中的一个分束器的玻色-爱因斯坦凝聚力干涉仪。由于分析BEC所需的数值技术和计算机程序与超短激光脉冲及其在原子物理中的应用有许多共同之处,我们观察到一个新的发展,即把这些技术应用于超强激光场中原子的电离和高次谐波的产生。我们采用了一种基于理论化学的计算方案,并评估了离子在低温氦气中的迁移率,从而对迁移率进行了动力学分析,并将其与实验结果进行了比较。出乎意料的是,我们确定了迄今未解决的偏振极限问题的原因。除了这些发现之外,还出现了新的挑战。例如,原子对在超低温下转化为分子构成非线性STIRAP问题,这是本主题下的重要问题,并且由于非线性STIRAP问题的普遍数学性质而更适用于相关问题。我们预计,在多体物理的绝热性和非线性动力学在低温下将出现更多的挑战。在超短激光脉冲及其与原子的相互作用领域,一个新的实验发展同样可能。我们期待着为取得进一步进展作出贡献。
项目成果
期刊论文数量(105)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
M.Mutou, S.Watanabe, M.Matsuzawa: "EXTENSION OF HYPERSPHERICAL METHOD TO ATTRACTIVE TWO-COMPONENT BOSE-EINSTEIN CONDENSATES"Atomic Collision Research in Japan. 29. 63 (2003)
M.Mutou、S.Watanabe、M.Matsuzawa:“超球面方法延伸到有吸引力的二元玻色-爱因斯坦凝聚体”日本原子碰撞研究。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
Time-dependent hyperspherical studies for a two-dimensional attractive Bose-Einstein condensate
二维有吸引力的玻色-爱因斯坦凝聚态的时间相关超球面研究
- DOI:
- 发表时间:2007
- 期刊:
- 影响因子:0
- 作者:Chien-Nan Liu;Toru Morishita;Shinichi Watanabe
- 通讯作者:Shinichi Watanabe
Vortex creation during magnetic trap manipulations of spinor Bose-Einstein condensates
旋量玻色-爱因斯坦凝聚的磁陷阱操作过程中涡旋的产生
- DOI:
- 发表时间:2006
- 期刊:
- 影响因子:0
- 作者:A.P.Itin;T.Morishita;M.Satoh;O.I.Tolstikhin;S.Watanabe
- 通讯作者:S.Watanabe
T.Morishita, C.DLin: "Hyperspherical approach to four-electron atomic systems"35 th Conference of the European Group for Atomic Spectroscopy, Abstracs (European conference abstracts). 27B. 123 (2003)
T.Morishita, C.DLin:“四电子原子系统的超球方法”第 35 届欧洲原子光谱组会议,Abstracs(欧洲会议摘要)。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
「研究成果報告書概要(欧文)」より
摘自《研究结果报告摘要(欧洲)》
- DOI:
- 发表时间:2006
- 期刊:
- 影响因子:0
- 作者:Yasushi Shigeri;Keiko Shimamoto
- 通讯作者:Keiko Shimamoto
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WATANABE Shinichi其他文献
A Study of Medical Disputes in the Commission of Scientists Set Up by the Environmental Agency
环境署设立的科学家委员会中的医疗纠纷研究
- DOI:
- 发表时间:
2005 - 期刊:
- 影响因子:0
- 作者:
城達也;宋安鍾編;WATANABE Shinichi - 通讯作者:
WATANABE Shinichi
WATANABE Shinichi的其他文献
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{{ truncateString('WATANABE Shinichi', 18)}}的其他基金
Monitoring activity of the Naru eagle ray to protect bivalve resources and to assess impact on the coastal ecosystem
监测纳鲁鹰魟的活动,以保护双壳类资源并评估对沿海生态系统的影响
- 批准号:
26870772 - 财政年份:2014
- 资助金额:
$ 2.3万 - 项目类别:
Grant-in-Aid for Young Scientists (B)
Development of the reflection-type terahertz polarizing microscope
反射式太赫兹偏光显微镜的研制
- 批准号:
24656054 - 财政年份:2012
- 资助金额:
$ 2.3万 - 项目类别:
Grant-in-Aid for Challenging Exploratory Research
Development and application of high speed, high accuracy, and time-dependent spin dynamics imaging measurement system
高速、高精度、瞬态自旋动力学成像测量系统的开发与应用
- 批准号:
24340070 - 财政年份:2012
- 资助金额:
$ 2.3万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Study on the Japanese horseshoe crab as an keystone species for conservation of the coastal ecosystem
作为沿海生态系统保护重点物种的日本鲎的研究
- 批准号:
23710286 - 财政年份:2011
- 资助金额:
$ 2.3万 - 项目类别:
Grant-in-Aid for Young Scientists (B)
Study of ultracold quantum dynamics using the controlled KRb inter-atomic interaction
利用受控 KRb 原子间相互作用研究超冷量子动力学
- 批准号:
22340116 - 财政年份:2010
- 资助金额:
$ 2.3万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
SOCIOLOGICAL STUDIES OF THE PROBLEM-SOLVING PROCESS IN POLLUTION AREAS
污染地区问题解决过程的社会学研究
- 批准号:
22530547 - 财政年份:2010
- 资助金额:
$ 2.3万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Non-equilibrium phase control of molecular conductors by intense terahertz pulse excitation
强太赫兹脉冲激励对分子导体的非平衡相位控制
- 批准号:
22684013 - 财政年份:2010
- 资助金额:
$ 2.3万 - 项目类别:
Grant-in-Aid for Young Scientists (A)
Study of density wave dynamics in organic conductors by optical pump and terahertz probe experiments
利用光泵和太赫兹探针实验研究有机导体中的密度波动力学
- 批准号:
20740170 - 财政年份:2008
- 资助金额:
$ 2.3万 - 项目类别:
Grant-in-Aid for Young Scientists (B)
Development of the Formation of Enolate Controlled by Acid-base Bifunctional Organochalcogenide Catalysts
酸碱双功能有机硫属化物催化剂控制烯醇化生成的研究进展
- 批准号:
20590021 - 财政年份:2008
- 资助金额:
$ 2.3万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Environmental Sociology on Victimizers-Victims Relationships about Problem of Itai-itai Disease and Cadmium poisoning
痛痛病与镉中毒问题受害人与受害人关系的环境社会学
- 批准号:
15530330 - 财政年份:2003
- 资助金额:
$ 2.3万 - 项目类别:
Grant-in-Aid for Scientific Research (C)