Abstract
We shed new light on entanglement measures in multipartite quantum systems by taking a computational-complexity approach toward quantifying quantum entanglement with two familiar notions—approximability and distinguishability. Built upon the formal treatment of partial separability, we measure the complexity of an entangled quantum state by determining (i) how hard to approximate it from a fixed classical state and (ii) how hard to distinguish it from all partially separable states. We further consider the Kolmogorovian-style descriptive complexity of approximation and distinction of partial entanglement.
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Yamakami, T. (2003). Computational Complexity Measures of Multipartite Quantum Entanglement. In: Ibaraki, T., Katoh, N., Ono, H. (eds) Algorithms and Computation. ISAAC 2003. Lecture Notes in Computer Science, vol 2906. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-24587-2_14
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DOI: https://doi.org/10.1007/978-3-540-24587-2_14
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-20695-8
Online ISBN: 978-3-540-24587-2
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