Spin Squeezing in Mixed Model of the One-Axis Twisting and Two-Axis Counter-Twisting with Decay |
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Authors: | Zu-Wu Bian Xiao-Bing Lai |
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Affiliation: | 1. Nanchang Normal College, Nanchang, 330029, People’s Republic of China 2. Department of Physics, Jiangxi Institute of Education, Nanchang, 330032, People’s Republic of China
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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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