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ON THE NON-LOCALITY OF TRIPARTITE NON-SINGALING BOXES EMERGING FROM WIRINGS

Abstrakt

It has been recently shown, that some of the tripartite boxes admittin g bilocal decom- position, lead to non-locality under wiring operation applied to t wo of the subsystems [R. Gallego et al. Physical Review Letters 109 , 070401 (2012)]. In the following, we study this phenomenon quantitatively. Basing on the known classes of bo xes closed un- der wirings, we introduce multipartite monotones which are count erparts of bipartite ones - the non-locality cost and robustness of non-locality. We then pr ovide analytical lower bounds on both the monotones in terms of the Maximal Non-lo cality which can be obtained by Wirings (MWN). We prove also upper bounds for the MWN of a given box, based on the weight of boxes signaling in a particular direction, that appear in its fully bilocal decomposition. We study different classes of partially local boxes (i.e. having local variable model with respect to some grouping of the parties). For each class the MWN is found, using the Linear Programming. The wirings which l ead to the MWN and exhibit that some of them can serve as a witness of the certain classes are a lso iden- tified. We conclude with example of partially local boxes being analo gue of quantum states that allow to distribute entanglement in separable manner

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Informacje szczegółowe

Kategoria:
Publikacja w czasopiśmie
Typ:
artykuł w czasopiśmie wyróżnionym w JCR
Opublikowano w:
QUANTUM INFORMATION & COMPUTATION nr 15, strony 1081 - 1108,
ISSN: 1533-7146
Język:
angielski
Rok wydania:
2015
Opis bibliograficzny:
Tuziemski J., Horodecki K.: ON THE NON-LOCALITY OF TRIPARTITE NON-SINGALING BOXES EMERGING FROM WIRINGS// QUANTUM INFORMATION & COMPUTATION. -Vol. 15, nr. 13&14 (2015), s.1081-1108
Weryfikacja:
Politechnika Gdańska

wyświetlono 13 razy

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