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Non-Markovian Dynamics of Spin Squeezing Under Detuning Modulation

机译：失谐调制下自压缩的非马氏动力学

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摘要

The dynamics of spin squeezing of an ensemble of N separate spin-1/2 particles, each coupled to a zero-temperature non-Markovian reservoir have been investigated. We show that the initial spin squeezing could be prolonged for a long time by utilizing detuning modification. We further explore that the spin squeezing sudden death (SSSD) could be circumvented with the increasing of detuning. By comparison with the results in Markovian regime with detuning and those in non-Markovian regime without detuning, we conclude that the disappearance of SSSD and the robust preservation of spin squeezing should be attributed to the combination of detuning and non-Markovian effect. The present results may be of direct importance for quantum metrology in open systems.%1750003.1-1750003.12
机译：研究了N个独立的spin-1 / 2粒子的集合的自旋压缩的动力学，每个粒子耦合到零温度非马尔科夫油藏。我们表明，利用失谐修饰可以将初始自旋压缩延长很长时间。我们进一步探索，随着失谐的增加，可以避免自旋挤压突然死亡（SSSD）。通过与具有失谐的马尔可夫政权和不具有失谐的非马尔可夫政权的结果进行比较，我们得出结论，SSSD的消失和自旋压缩的稳健保留应归因于失谐和非马尔可夫效应的结合。目前的结果对于开放系统中的量子计量可能具有直接的重要性。％1750003.1-1750003.12

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  • 来源
    《Open Systems & Information Dynamics》 |2017年第1期|31-42|共12页
  • 作者

    Xing Xiao; Jia-Ju Wu; Wo-Jun Zhong; Yan-Ling Li;

  • 作者单位

    College of Physics and Electronic Information, Gannan Normal University Ganzhou Jiangxi 341000, China;

    College of Physics and Electronic Information, Gannan Normal University Ganzhou Jiangxi 341000, China;

    College of Physics and Electronic Information, Gannan Normal University Ganzhou Jiangxi 341000, China;

    School of Information Engineering, Jiangxi University of Science and Technology Ganzhou, Jiangxi 341000, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    spin squeezing; detuning modulation; non-markovian dynamics;

    机译：旋转挤压失谐调制非马尔可夫动力学;

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