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Erschienen in: Quantum Information Processing 4/2021

01.04.2021

Proving the distillability problem of two-copy \(4\times 4\) Werner states for monomial matrices

verfasst von: Lin Chen, Huixia He, Xian Shi, Li-Jun Zhao

Erschienen in: Quantum Information Processing | Ausgabe 4/2021

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Abstract

The distillability conjecture of two-copy \(4\times 4\) Werner states is one of the main open problems in quantum information (https://​arxiv.​org/​abs/​2002.​03233, P. Horodecki, L. Rudnicki, and K. Zyczkowski). We prove three special cases of the conjecture in terms of the \(4\times 4\) non-normal matrices AB involved in the conjecture. The first case, namely the main result of this paper, occurs when AB are monomial matrices. Then, we apply it to the remaining two cases. One case occurs when AB both have at most two nonzero entries. The other case works for rank-one A and some rank-two B. Our results present the latest progress on the conjecture.

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Metadaten
Titel
Proving the distillability problem of two-copy Werner states for monomial matrices
verfasst von
Lin Chen
Huixia He
Xian Shi
Li-Jun Zhao
Publikationsdatum
01.04.2021
Verlag
Springer US
Erschienen in
Quantum Information Processing / Ausgabe 4/2021
Print ISSN: 1570-0755
Elektronische ISSN: 1573-1332
DOI
https://doi.org/10.1007/s11128-021-03098-w

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