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https://hdl.handle.net/10356/101837| Title: | Entanglement witnesses with variable number of local measurements | Authors: | Laskowski, Wiesław Markiewicz, Marcin Paterek, Tomasz Weinar, Ryszard |
Keywords: | DRNTU::Science::Chemistry::Physical chemistry::Quantum chemistry | Issue Date: | 2013 | Source: | Laskowski, W., Markiewicz, M., Paterek, T., & Weinar, R. (2013). Entanglement witnesses with variable number of local measurements. Physical Review A, 88(2), 022304. | Series/Report no.: | Physical review A | Abstract: | We present a class of entanglement identifiers which has the following experimentally friendly feature: once the expectation value of the identifier exceeds some definite limit, we can conclude the state is entangled, even if not all measurements defining the identifier have been performed. These identifiers are in the form of sums of non-negative functions of correlations in a quantum state, mostly squares of correlations, and we illustrate their use and strengths on various examples. | URI: | https://hdl.handle.net/10356/101837 http://hdl.handle.net/10220/18763 |
DOI: | 10.1103/PhysRevA.88.022304 | Schools: | School of Physical and Mathematical Sciences | 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: [http://dx.doi.org/10.1103/PhysRevA.88.022304]. 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 |
| Appears in Collections: | SPMS Journal Articles |
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| Entanglement witnesses with variable number of local measurements.pdf | 129.14 kB | Adobe PDF |  View/Open |
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