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21 January 2021
 
  » arxiv » quant-ph/0308072

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Computational Complexity Measures of Multipartite Quantum Entanglement
Tomoyuki Yamakami ;
Date 13 Aug 2003
Journal Proc. 14th ISAAC. Springer’s LNCS, Vol.2906, pp.117-128, 2003
Subject Quantum Physics; Computational Complexity | quant-ph cs.CC
AbstractWe 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.
Source arXiv, quant-ph/0308072
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