Entanglement witnesses with variable number of local measurements

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 id...

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Main Authors:	Laskowski, Wiesław, Markiewicz, Marcin, Paterek, Tomasz, Weinar, Ryszard
Other Authors:	School of Physical and Mathematical Sciences
Format:	Article
Language:	English
Published:	2014
Subjects:	DRNTU::Science::Chemistry::Physical chemistry::Quantum chemistry
Online Access:	https://hdl.handle.net/10356/101837 http://hdl.handle.net/10220/18763
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Institution:	Nanyang Technological University
Language:	English

id	sg-ntu-dr.10356-101837
record_format	dspace
spelling	sg-ntu-dr.10356-1018372023-02-28T19:43:15Z Entanglement witnesses with variable number of local measurements Laskowski, Wiesław Markiewicz, Marcin Paterek, Tomasz Weinar, Ryszard School of Physical and Mathematical Sciences DRNTU::Science::Chemistry::Physical chemistry::Quantum chemistry 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. NRF (Natl Research Foundation, S’pore) MOE (Min. of Education, S’pore) Published version 2014-02-06T03:35:47Z 2019-12-06T20:45:20Z 2014-02-06T03:35:47Z 2019-12-06T20:45:20Z 2013 2013 Journal Article Laskowski, W., Markiewicz, M., Paterek, T., & Weinar, R. (2013). Entanglement witnesses with variable number of local measurements. Physical Review A, 88(2), 022304. https://hdl.handle.net/10356/101837 http://hdl.handle.net/10220/18763 10.1103/PhysRevA.88.022304 en Physical review A © 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. application/pdf
institution	Nanyang Technological University
building	NTU Library
continent	Asia
country	Singapore Singapore
content_provider	NTU Library
collection	DR-NTU
language	English
topic	DRNTU::Science::Chemistry::Physical chemistry::Quantum chemistry
spellingShingle	DRNTU::Science::Chemistry::Physical chemistry::Quantum chemistry Laskowski, Wiesław Markiewicz, Marcin Paterek, Tomasz Weinar, Ryszard Entanglement witnesses with variable number of local measurements
description	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.
author2	School of Physical and Mathematical Sciences
author_facet	School of Physical and Mathematical Sciences Laskowski, Wiesław Markiewicz, Marcin Paterek, Tomasz Weinar, Ryszard
format	Article
author	Laskowski, Wiesław Markiewicz, Marcin Paterek, Tomasz Weinar, Ryszard
author_sort	Laskowski, Wiesław
title	Entanglement witnesses with variable number of local measurements
title_short	Entanglement witnesses with variable number of local measurements
title_full	Entanglement witnesses with variable number of local measurements
title_fullStr	Entanglement witnesses with variable number of local measurements
title_full_unstemmed	Entanglement witnesses with variable number of local measurements
title_sort	entanglement witnesses with variable number of local measurements
publishDate	2014
url	https://hdl.handle.net/10356/101837 http://hdl.handle.net/10220/18763
_version_	1759854417651171328

Entanglement witnesses with variable number of local measurements

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