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Single-Particle Coherence and Spin Squeezing in Four-Qubit Phase State

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Abstract

We investigate single-particle coherence and spin squeezing in four-qubit phase state governed by an one-axis twisting Hamiltonian. In particular, we are interesting in the dependence of single-particle coherence and spin squeezing on the nonlinear interaction. It is shown that single-particle coherence and spin squeezing parameter only depend on the nonlinear interaction and they are periodic function of nonlinear interaction.

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Acknowledgements

The authors are grateful to Song-Song Li for useful discussions that took place for the duration of this work.

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Authors and Affiliations

  1. Vocational and Technical College, Xinyu College, Xinyu, 338004, People’s Republic of China

    He-Sheng Liu

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  1. He-Sheng Liu
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Correspondence to He-Sheng Liu.

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Liu, HS. Single-Particle Coherence and Spin Squeezing in Four-Qubit Phase State. Int J Theor Phys 52, 3808–3812 (2013). https://doi.org/10.1007/s10773-013-1686-0

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  • DOI: https://doi.org/10.1007/s10773-013-1686-0

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