中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Quantum critical dynamics of a qubit coupled to an isotropic Lipkin-Meshkov-Glick bath

文献类型:期刊论文

作者Quan, H. T.; Wang, Z. D.; Sun, C. P.; Quan, HT , Univ Hong Kong, Dept Phys, Pokfulam Rd, Hong Kong, Hong Kong, Peoples R China
刊名PHYSICAL REVIEW A
出版日期2007
卷号76期号:1页码:-
关键词Body Approximation Methods Jaynes-cummings Model Solvable Model Antiferromagnetic Environment Phase-transition Dicke-model Entanglement Decoherence Validity System
ISSN号1050-2947
英文摘要We explore a dynamic signature of quantum phase transition (QPT) in an isotropic Lipkin-Meshkov-Glick (LMG) model by studying the time evolution of a central qubit coupled to it. We evaluate exactly the time-dependent purity, which can be used to measure quantum coherence, of the central qubit. It is found that distinctly different behaviors of the purity as a function of the parameter reveal clearly the QPT point in the system. It is also clarified that the present model is equivalent to an anti-Jaynes-Cummings model under certain conditions.
学科主题Physics
URL标识查看原文
WOS记录号WOS:000248486600022
公开日期2012-08-02
源URL[http://ir.itp.ac.cn/handle/311006/5698]  
专题理论物理研究所_理论物理所1978-2010年知识产出
通讯作者Quan, HT , Univ Hong Kong, Dept Phys, Pokfulam Rd, Hong Kong, Hong Kong, Peoples R China
推荐引用方式
GB/T 7714
Quan, H. T.,Wang, Z. D.,Sun, C. P.,et al. Quantum critical dynamics of a qubit coupled to an isotropic Lipkin-Meshkov-Glick bath[J]. PHYSICAL REVIEW A,2007,76(1):-.
APA Quan, H. T.,Wang, Z. D.,Sun, C. P.,&Quan, HT , Univ Hong Kong, Dept Phys, Pokfulam Rd, Hong Kong, Hong Kong, Peoples R China.(2007).Quantum critical dynamics of a qubit coupled to an isotropic Lipkin-Meshkov-Glick bath.PHYSICAL REVIEW A,76(1),-.
MLA Quan, H. T.,et al."Quantum critical dynamics of a qubit coupled to an isotropic Lipkin-Meshkov-Glick bath".PHYSICAL REVIEW A 76.1(2007):-.

入库方式: OAI收割

来源:理论物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。