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Spin Squeezing of Superposition

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Abstract

We investigate the mean spin direction, length of mean spin and spin squeezing in a general superposition of a GHZ state and a W state. It is shown that the mean spin direction and spin squeezing parameter are determined by the coefficients of superposition and the relative phase between the GHZ state and the W state; while the length of mean spin is only determined by coefficients of superposition.

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  1. Department of Physics, Hunan Normal University, Changsha, 410081, People’s Republic of China

    Song-song Li

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  1. Song-song Li
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Correspondence to Song-song Li.

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Li, Ss. Spin Squeezing of Superposition. Int J Theor Phys 50, 719–723 (2011). https://doi.org/10.1007/s10773-010-0601-1

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  • DOI: https://doi.org/10.1007/s10773-010-0601-1

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