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Title: Optimized state-independent entanglement detection based on a geometrical threshold criterion
Authors: Laskowski, Wiesław
Schwemmer, Christian
Richart, Daniel
Knips, Lukas
Paterek, Tomasz
Weinfurter, Harald
Keywords: DRNTU::Science::Mathematics::Geometry
Issue Date: 2013
Source: Laskowski, W., Schwemmer, C., Richart, D., Knips, L., Paterek, T., & Weinfurter, H. (2013). Optimized state-independent entanglement detection based on a geometrical threshold criterion. Physical Review A, 88(2), 022327.
Series/Report no.: Physical review A
Abstract: Experimental procedures are presented for the rapid detection of entanglement of unknown arbitrary quantum states. The methods are based on the entanglement criterion using accessible correlations and the principle of correlation complementarity. Our first scheme essentially establishes the Schmidt decomposition for pure states, with few measurements only and without the need for shared reference frames. The second scheme employs a decision tree to speed up entanglement detection. We analyze the performance of the methods using numerical simulations and verify them experimentally for various states of two, three, and four qubits.
DOI: 10.1103/PhysRevA.88.022327
Rights: © 2013 American Physical Society. This paper was published in Physical Review A - Atomic, Molecular, and Optical Physics and is made available as an electronic reprint (preprint) with permission of American Physical Society. The paper can be found at the following official DOI: [].  One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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