Quantum Fisher Information in the Generalized One-axis Twisting Model

被引：27
|
作者：
Liu, Wan-Fang [1 ,2 ]
Xiong, Heng-Na [1 ]
Ma, Jian [1 ]
Wang, Xiaoguang [1 ]
机构：
[1] Zhejiang Univ, Dept Phys, Zhejiang Inst Modern Phys, Hangzhou 310027, Zhejiang, Peoples R China
[2] Anqing Teachers Coll, Sch Phys & Elect Engn, Anqing 246011, Peoples R China
来源：
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS | 2010年 / 49卷 / 05期
关键词：
Quantum Fisher information; One-axis twisting model; Heisenberg limit; Entanglement; STATISTICAL DISTANCE; STATE;
D O I：
10.1007/s10773-010-0286-5
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We investigate the quantum Fisher information (QFI) of symmetric states for spin-s particles. We derive the maximal QFI, and find that quantum spin correlations are essential ingredients of the maximal QFI. We make applications to the generalized one-axis twisting model. The results show that the redistributions of uncertainties on the basis of the quantum correlations in the multiqubit system are useful for sub-shot-noise phase sensitivity. Furthermore, for high-spin (s > 1/2) composite systems, we find a sufficient criterion for entanglement.
引用
收藏
页码：1073 / 1081
页数：9
相关论文
共 50 条
  • [21] Spin Squeezing: Transforming One-Axis Twisting into Two-Axis Twisting
    Liu, Y. C.
    Xu, Z. F.
    Jin, G. R.
    You, L.
    PHYSICAL REVIEW LETTERS, 2011, 107 (01)
  • [22] Spin Squeezing in Mixed Model of the One-Axis Twisting and Two-Axis Counter-Twisting with Decay
    Bian, Zu-Wu
    Lai, Xiao-Bing
    INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS, 2013, 52 (11) : 3922 - 3926
  • [23] Phase Coherence and Spin Squeezing in One-Axis Twisting Model with Decay
    Liu, He-Sheng
    INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS, 2013, 52 (10) : 3624 - 3628
  • [24] Phase Coherence and Spin Squeezing in One-Axis Twisting Model with Decay
    He-Sheng Liu
    International Journal of Theoretical Physics, 2013, 52 : 3624 - 3628
  • [25] SPIN SQUEEZING OF ONE-AXIS TWISTING MODEL IN THE PRESENCE OF PHASE DEPHASING
    Ji, Chen-Gang
    Liu, Yong-Chun
    Jin, Guano-Ri
    QUANTUM INFORMATION & COMPUTATION, 2013, 13 (3-4) : 266 - 280
  • [26] Spin squeezing of the non-Hermitian one-axis twisting model
    Wu, Ling-Na
    Jin, Guang-Ri
    You, L.
    PHYSICAL REVIEW A, 2015, 92 (03):
  • [27] Quantum Fisher information matrix for the two-axis twisting model at thermal equilibrium
    Aldhuwayhi, Mona
    Zidan, Nour
    Alhashash, Abeer
    Rahman, Atta Ur
    MODERN PHYSICS LETTERS A, 2022, 37 (31)
  • [28] Spin Squeezing in Mixed Model of the One-Axis Twisting and Two-Axis Counter-Twisting with Decay
    Zu-Wu Bian
    Xiao-Bing Lai
    International Journal of Theoretical Physics, 2013, 52 : 3922 - 3926
  • [29] Controlling Spin Squeezing in One-Axis Twisting with Decay
    Yi, Xiao-Jie
    Huang, Guo-Qiang
    Wang, Jian-Min
    INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS, 2013, 52 (10) : 3376 - 3380
  • [30] Squeezing of spin-1 quantum states via a one-axis twisting Hamiltonian
    Begzjav, Tuguldur Kh
    Agarwal, Girish S.
    PHYSICAL REVIEW A, 2021, 104 (02)
12345