The power of symmetric extensions for entanglement detection (2009)
Navascues, Miguel, Owari, Masaki, Plenio, Martin B.
In this paper, we present new progress on the study of the symmetric extension criterion for separability. First, we show that a perturbation of order O(1/N) is sufficient and, in general, necessary...
A complete criterion for separability detection (2009)
Navascues, Miguel, Owari, Masaki, Plenio, Martin B.
Using new results on the separability properties of bosonic systems, we provide a new complete criterion for separability. This criterion aims at characterizing the set of separable states from the...
The geometric measure of entanglement for a symmetric pure state with positive amplitudes (2009)
Hayashi, Masahito, Markham, Damian, Murao, Mio, Owari, Masaki, Virmani, Shashank
In this paper for a class of symmetric multiparty pure states we consider a conjecture related to the geometric measure of entanglement: 'for a symmetric pure state, the closest product state in...
From Bell Inequalities to Tsirelson's Theorem: A Survey (2008)
Avis, David, Moriyama, Sonoko, Owari, Masaki
The first part of this paper contains an introduction to Bell inequalities and Tsirelson's theorem for the non-specialist. The next part gives an explicit optimum construction for the "hard" part of...
Two-way classical communication remarkably improves local distinguishability (2007)
Owari, Masaki, Hayashi, Masahito
We analyze the difference in the local distinguishability among the following three restrictions; (i) Local operations and only one-way classical communications (one-way LOCC) are permitted. (ii)...
Owari, Masaki, Braunstein, Samuel L., Nemoto, Kae, Murao, Mio
By introducing the concept of $\epsilon$-convertibility, we extend Nielsen's and Vidal's theorems to the entanglement transformation of infinite-dimensional systems. Using an infinite-dimensional...
Local copying and local discrimination as a study for non-locality of a set (2005)
Owari, Masaki, Hayashi, Masahito
We focus on the non-locality concerning local copying and local discrimination, especially for a set of orthogonal maximally entangled states in prime dimensional systems, as a study of non-locality...
Owari, Masaki, Hayashi, Masahito
In the quantum system, perfect copying is impossible without prior knowledge. But, perfect copying is possible, if it is known that unknown states to be copied is contained by the set of orthogonal...
Entanglement convertibility for infinite dimensional pure bipartite states (2004)
Owari, Masaki, Matsumoto, Keiji, Murao, Mio
It is shown that the order property of pure bipartite states under SLOCC (stochastic local operations and classical communications) changes radically when dimensionality shifts from finite to...
Existence of incomparable pure bipartite states in infinite dimensional systems (2003)
Owari, Masaki, Matsumoto, Keiji, Murao, Mio
Based on set theoretic ordering properties, a general formulation for constructing a pair of convertibility monotones, which are generalizations of distillable entanglement and entanglement cost, is...