Nonequilibrium quantum phase transition in a spinor quantum gas in a lattice coupled to a membrane
文献类型：期刊论文
| 作者 | Xu, Xingran1,2,3; Zhang, Zhidong2,3; Liang, Zhaoxin1 |
| 刊名 | PHYSICAL REVIEW A
 |
| 出版日期 | 2019-11-19 |
| 卷号 | 100期号:5页码:11 |
| ISSN号 | 2469-9926 |
| DOI | 10.1103/PhysRevA.100.053616 |
| 通讯作者 | Liang, Zhaoxin(zhxliang@gmail.com) |
| 英文摘要 | Recently, a novel kind of hybrid atom-optomechanical system, consisting of atoms in a lattice coupled to a membrane, has been experimentally realized [A. Vochezer et al., Phys. Rev. Lett. 120, 073602 (2018)], which promises a viable contender in the competitive field of simulating nonequilibrium many-body physics. Here we are motivated to investigate a spinor Bose gas coupled to a vibrational mode of a nanomembrane, focusing on analyzing the role of the spinor degrees of freedom therein. Through an adiabatic elimination of the degrees of freedom of the quantum oscillator, we derive an effective Hamiltonian which reveals a competition between the force localizing the atoms and the membrane displacement. We analyze the dynamical stability of the steady state using the Bogoliubov-de Gennes approach and derive the stationary phase diagram in the parameter space. Then, we investigate the first-order nonequilibrium quantum phase transition (NQPT) from a localized symmetric state of the atom cloud to a shifted symmetry-broken state, characterized by the occurrence of a hysteresis. Moreover we present a detailed analysis of the effects of the spin degree of freedom on NQPT. Our work presents a simple way to study the effects of the spinor degree of freedom on the nonequilibrium nonlinear phenomena that is complementary to ongoing experiments on the hybrid atom-optomechanical system. |
| 资助项目 | Natural Science Foundation of China[11274315] ; Youth Innovation Promotion Association CAS[2013125] |
| WOS研究方向 | Optics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000497784000007 |
| 出版者 | AMER PHYSICAL SOC |
| 资助机构 | Natural Science Foundation of China ; Youth Innovation Promotion Association CAS |
| 源URL | [http://ir.imr.ac.cn/handle/321006/136071]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Liang, Zhaoxin |
| 作者单位 | 1.Zhejiang Normal Univ, Dept Phys, Jinhua 321004, Zhejiang, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China 3.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Xingran,Zhang, Zhidong,Liang, Zhaoxin. Nonequilibrium quantum phase transition in a spinor quantum gas in a lattice coupled to a membrane[J]. PHYSICAL REVIEW A,2019,100(5):11. |
| APA | Xu, Xingran,Zhang, Zhidong,&Liang, Zhaoxin.(2019).Nonequilibrium quantum phase transition in a spinor quantum gas in a lattice coupled to a membrane.PHYSICAL REVIEW A,100(5),11. |
| MLA | Xu, Xingran,et al."Nonequilibrium quantum phase transition in a spinor quantum gas in a lattice coupled to a membrane".PHYSICAL REVIEW A 100.5(2019):11. |
入库方式： OAI收割
来源：金属研究所
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