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Negative result about the construction of genuinely entangled subspaces from unextendible product bases

Abstrakt

Unextendible product bases (UPBs) provide a versatile tool with various applications across different areas of quantum information theory. Their comprehensive characterization is thus of great importance and has been a subject of vital interest for over two decades now. An open question asks about the existence of UPBs, which are genuinely unextendible, i.e., they are not extendible even with biproduct vectors. In other words, the problem is to verify whether there exist genuinely entangled subspaces (GESs), subspaces composed solely of genuinely multiparty entangled states, complementary to UPBs. We solve this problem in the negative for many sizes of UPBs in different multipartite scenarios. In particular, in the all-important case of equal local dimensions, we show that there are always forbidden cardinalities for such UPBs, including the minimal ones corresponding to GESs of the maximal dimensions.

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Informacje szczegółowe

Kategoria:
Publikacja w czasopiśmie
Typ:
artykuły w czasopismach
Opublikowano w:
PHYSICAL REVIEW A nr 106,
ISSN: 2469-9926
Język:
angielski
Rok wydania:
2022
Opis bibliograficzny:
Demianowicz M.: Negative result about the construction of genuinely entangled subspaces from unextendible product bases// PHYSICAL REVIEW A -Vol. 106, (2022), s.012442-
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1103/physreva.106.012442
Źródła finansowania:
  • COST_FREE
Weryfikacja:
Politechnika Gdańska

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