文献类型：期刊文献

中文题名：Tunable two-axis spin model and spin squeezing in two cavities

英文题名：Tunable two-axis spin model and spin squeezing in two cavities

作者：Yu, Lixian[1];Li, Caifeng[2,3];Fan, Jingtao[2];Chen, Gang[2,5];Zhang, Tian-Cai[4,5];Jia, Suotang[2,5]

机构：[1]Shaoxing Univ, Dept Phys, Shaoxing 312000, Peoples R China;[2]Shanxi Univ, Inst Laser Spect, State Key Lab Quantum Opt & Quantum Opt Devices, Taiyuan 030006, Peoples R China;[3]Shanxi Univ, Inst Theoret Phys, Taiyuan 030006, Peoples R China;[4]Shanxi Univ, Inst Optoelect, State Key Lab Quantum Opt & Quantum Opt Devices, Taiyuan 030006, Peoples R China;[5]Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Peoples R China

年份：2016

卷号：0

期号：5

中文期刊名：中国物理B：英文版

外文期刊名：CHINESE PHYSICS B

收录：SCI-EXPANDED(收录号：WOS:000375681800004)、CSTPCD、、EI(收录号：20162202433978)、CSCD2015_2016、Scopus(收录号：2-s2.0-84969792635)、WOS、CSCD

基金：Project supported by the National Natural Science Foundation of China (Grant Nos. 11422433, 11447028, 61227902, 11434007, and 61275211), the Natural Science Foundation of Zhejiang Province, China (Grant No. LY13A040001), and the Scientific Research Foundation of the Education Department of Zhejiang Province, China (Grant No. Y201122352).

语种：英文

中文关键词：自旋模型;压缩因子;双轴;哈密顿量;可调;双腔;压缩实验;无量纲参数

外文关键词：two-axis spin model; spin squeezing; two cavities

中文摘要：Multi-mode cavities have now attracted much attention both experimentally and theoretically. In this paper, inspired by recent experiments of cavity-assisted Raman transitions, we realize a two-axis spin Hamiltonian H = q(J_x^2+ χJ_y^2) + ω_0J_z in two cavities. This realized Hamiltonian has a distinct property that all parameters can be tuned independently. For proper parameters, the well-studied one- and two-axis twisting Hamiltonians are recovered, and the scaling of N^(-1) of the maximal squeezing factor can occur naturally. On the other hand, in the two-axis twisting Hamiltonian, spin squeezing is usually reduced when increasing the atomic resonant frequency ω_0. Surprisingly, we find that by combining with the dimensionless parameter χ(>-1), this atomic resonant frequency ω_0 can enhance spin squeezing greatly. These results are beneficial for achieving the required spin squeezing in experiments.

外文摘要：Multi-mode cavities have now attracted much attention both experimentally and theoretically. In this paper, inspired by recent experiments of cavity-assisted Raman transitions, we realize a two-axis spin Hamiltonian H = q(J(x)(2) vertical bar chi J(y)(2) vertical bar omega(0)J(z) in two cavities. This realized Hamiltonian has a distinct property that all parameters can be tuned independently. For proper parameters, the well-studied one-and two-axis twisting Hamiltonians are recovered, and the scaling of N-1 of the maximal squeezing factor can occur naturally. On the other hand, in the two-axis twisting Hamiltonian, spin squeezing is usually reduced when increasing the atomic resonant frequency omega(0). Surprisingly, we find that by combining with the dimensionless parameter chi( > -1), this atomic resonant frequency omega(0) can enhance spin squeezing greatly. These results are beneficial for achieving the required spin squeezing in experiments.