作者机构：
[Zhang, Dong; Yu, Shengbin; Lou, Wen-kai; Zhou, Ma; Chang, Kai] Chinese Acad Sci, Inst Semicond, SKLSM, POB 912, Beijing 100083, Peoples R China.;[Zhang, Dong; Yu, Shengbin; Lou, Wen-kai; Zhou, Ma; Chang, Kai] Univ Chinese Acad Sci, CAS Ctr Excellence Topol Quantum Computat, Beijing 100190, Peoples R China.;[Zhou, Ma; Chang, Kai] Beijing Acad Quantum Informat Sci, Beijing 100193, Peoples R China.;[Yang, Wen] Beijing Computat Sci Res Ctr, Beijing 100193, Peoples R China.;[Cheng, Fang] Changsha Univ Sci & Technol, Dept Phys & Elect Sci, Changsha 410004, Hunan, Peoples R China.
通讯机构：
[Chang, Kai] C;[Chang, Kai] U;[Chang, Kai] B;Chinese Acad Sci, Inst Semicond, SKLSM, POB 912, Beijing 100083, Peoples R China.;Univ Chinese Acad Sci, CAS Ctr Excellence Topol Quantum Computat, Beijing 100190, Peoples R China.
摘要：
We find that perpendicular electric fields can give rise to a tunable current-induced spin polarization in monolayer InSe. The interplay between the Rashba and the intrinsic Dresselhaus spin-orbit coupling leads to several Lifshitz transitions near the valence band maxima. Interestingly, the sign of the spin polarization changes with increasing perpendicular electric fields. We propose a spin potentiometric device to measure current-induced spin polarization.
关键词：
Atom laser;Bose-Einstein condensate;Quadrature squeezing
摘要：
The quadrature squeezing properties of an atom laser originating from atomic Bose–Einstein condensate interacting with light field are studied. We find that the squeezing properties of the atom laser are dependent on the initial light field interacting with the atomic Bose–Einstein condensate. If the initial light field cannot be squeezed, such as number state or coherent state light field, the atom laser as well cannot be squeezed. However, if the initial light field interacting with the atomic Bose–Einstein condensate being in squeezed state, the atom laser can be squeezed periodically, and its squeezing depth is dependent on the intensity of interatoms interaction.
作者机构：
[黄春佳; 方家元; 周明; 孔凡志] Institute of Optoelectronics, College of Physics and Electronic Science, Changsha University of Science and Technology, Changsha 410076, China
通讯机构：
[Zhou, M.] I;Institute of Optoelectronics, , Changsha 410076, China
作者机构：
[黄春佳; 周明; 孔凡志; 方家元; 莫克威] Department of Physics and Electronic Science, Changsha University of Science and Technology, Changsha 410077, China
通讯机构：
[Huang, C.] D;Department of Physics and Electronic Science, , Changsha 410077, China
关键词：
Condensation;Laser applications;Quantum theory
摘要：
The evolution characteristics of quantum state fidelity in an interacting system of single-mode light field and atomic Bose-Einstein condensate have been studied and the influence of the initial light field intensity and the interaction among atoms of Bose-Einstein condensate on the quantum state fidelity respectively have been discussed.
作者机构：
[Chunjia Huang; Kewei Mo; Ming Zhou] Department of Physics and Electronic Science, Changsha University of Science &2.Technology, Changsha 410077
关键词：
Bose Einstein condensates;Coherent states;Lasers
摘要：
The quantum dynamic behavior of the system composed of V-type three-level atomic Bose-Einstein condensate (BEC) interacting with two-mode coherent light field has been studied. The results show that the atoms of V-type three-level atomic BEC, which are excited to higher-level states under the action of light field, still keep their properties of coherent states. It demonstrates theoretically that two-mode atomic laser may be prepared by V-type three-level atomic BEC.
