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Geometric Phase of Two-Level Mixed State and Bloch Sphere Structure

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Abstract

Geometric phase of two-level mixed state is investigated by comparing our approach with kinematic one. The results show that in the kinematic one, the Berry phases emerge discontinuous points because of losing a physical contribution from one of two eigenstates of density matrix. In contrast, our approach is a smooth curve of initial angle, evolving time and decay rate because of the interference between the two eigenstates with the probability ensemble.

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Authors and Affiliations

  1. College of Physics and Communication Electronics, Jiangxi Normal University, Nanchang, 33022, P.R. China

    Guolan Fu, Xiaoshan Liu & Z. S. Wang

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  1. Guolan Fu
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  2. Xiaoshan Liu
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  3. Z. S. Wang
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Correspondence to Z. S. Wang.

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Fu, G., Liu, X. & Wang, Z.S. Geometric Phase of Two-Level Mixed State and Bloch Sphere Structure. Int J Theor Phys 52, 3132–3140 (2013). https://doi.org/10.1007/s10773-013-1605-4

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  • DOI: https://doi.org/10.1007/s10773-013-1605-4

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