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Criteria for non-k-separability of n-partite quantum states

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Abstract

We develop separability criteria to identify non-k-separability (k = 2,3, ... ,n) and genuine multipartite entanglement in different classes of mixed n-partite quantum states using elements of density matrices. With the help of these criteria, we detect non-k-separability in n-qudit GHZ and W states respectively added with white noise. We also discuss the experimental implementation of our criteria by means of local observables.

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Authors and Affiliations

  1. Centre for Nonlinear Dynamics, School of Physics, Bharathidasan University, Tiruchirappalli, 620024, Tamilnadu, India

    N. Ananth & M. Senthilvelan

  2. Centre for Nonlinear Science & Engineering, School of Electrical & Electronics Engineering, SASTRA University, Thanjavur, 613401, Tamilnadu, India

    V. K. Chandrasekar

Authors
  1. N. Ananth
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  2. V. K. Chandrasekar
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  3. M. Senthilvelan
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Correspondence to M. Senthilvelan.

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Ananth, N., Chandrasekar, V.K. & Senthilvelan, M. Criteria for non-k-separability of n-partite quantum states. Eur. Phys. J. D 69, 56 (2015). https://doi.org/10.1140/epjd/e2015-50538-5

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  • DOI: https://doi.org/10.1140/epjd/e2015-50538-5

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