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Spin Squeezing of a General 3-Qubit State

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Abstract

We investigate the spin squeezing of a general 3-qubit state, which is superposed by a GHZ state and two W states. Numerical solutions for the length of mean spin, mean spin direction and spin squeezing were given. It is shown that the mean spin direction, the length of mean spin and the spin squeezing parameter are determined by the superposition coefficients and the relative phases between the GHZ state and the two W states.

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Acknowledgements

Dr. Song-Song Li acknowledges support from the Doctor Fund of Jiangxi Institute of Education.

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  1. Department of Physics, Jiangxi Institute of Education, Nanchang, 330029, People’s Republic of China

    Song-Song Li & Zhen-Ya Liu

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  1. Song-Song Li
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  2. Zhen-Ya Liu
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Correspondence to Song-Song Li.

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Li, SS., Liu, ZY. Spin Squeezing of a General 3-Qubit State. Int J Theor Phys 51, 2737–2742 (2012). https://doi.org/10.1007/s10773-012-1148-0

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  • DOI: https://doi.org/10.1007/s10773-012-1148-0

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