期刊
NATURE COMMUNICATIONS
卷 5, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/ncomms5023
关键词
-
资金
- NSF
- ARO [W911NF-12-1-0334]
- DARPA-YFA [N66001-10-1-4025]
- AFOSR [FA9550-13-1-0045]
- NSF-PHY [1249293]
- Hong Kong RGC/GRF Projects [401011, 2130352]
- Chinese University of Hong Kong (CUHK) Focused Investments Scheme
- Division Of Physics
- Direct For Mathematical & Physical Scien [0969867, 1249293] Funding Source: National Science Foundation
Spin-orbit-coupled Bose-Einstein condensates (BECs) provide a powerful tool to investigate interesting gauge field-related phenomena. Here we study the ground state properties of such a system and show that it can be mapped to the well-known Dicke model in quantum optics, which describes the interactions between an ensemble of atoms and an optical field. A central prediction of the Dicke model is a quantum phase transition between a superradiant phase and a normal phase. We detect this transition in a spin-orbit-coupled BEC by measuring various physical quantities across the phase transition. These quantities include the spin polarization, the relative occupation of the nearly degenerate single-particle states, the quantity analogous to the photon field occupation and the period of a collective oscillation (quadrupole mode). The applicability of the Dicke model to spin-orbit-coupled BECs may lead to interesting applications in quantum optics and quantum information science.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据