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Spin Squeezing in Mixed Model of the One-Axis Twisting and Two-Axis Counter-Twisting with Decay

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Abstract

We investigate spin squeezing of a collective spin system governed by mixed Hamiltonian of the one-axis twisting and two-axis counter-twisting with decay. The analytic solutions of the optimally squeezed angle and the spin squeezing parameter are derived. It is shown that the two-axis counter-twisting Hamiltonian induces stronger spin squeezing than the one-axis twisting one. It is also shown that the decay rate has no effect on the size of the squeezing parameter, it only affects the period of squeezing parameter.

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Authors and Affiliations

  1. Nanchang Normal College, Nanchang, 330029, People’s Republic of China

    Zu-Wu Bian

  2. Department of Physics, Jiangxi Institute of Education, Nanchang, 330032, People’s Republic of China

    Xiao-Bing Lai

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  1. Zu-Wu Bian
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  2. Xiao-Bing Lai
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Correspondence to Zu-Wu Bian.

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Bian, ZW., Lai, XB. Spin Squeezing in Mixed Model of the One-Axis Twisting and Two-Axis Counter-Twisting with Decay. Int J Theor Phys 52, 3922–3926 (2013). https://doi.org/10.1007/s10773-013-1703-3

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  • DOI: https://doi.org/10.1007/s10773-013-1703-3

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