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arXiv · 1908.03434

LOCC distinguishable orthogonal product states with least entanglement resource

Haiquan Li·Xilin Tang·Naihuan Jing·Ze Gu
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Abstract

In this paper, we construct $2n-1$ locally indistinguishable orthogonal product states in $\mathbb{C}^n\otimes\mathbb{C}^{4}~(n>4)$ and $\mathbb{C}^n\otimes\mathbb{C}^{5}~(n\geq 5)$ respectively. Moreover, a set of locally indistinguishable orthogonal product states with $2(n+2l)-8$ elements in $\mathbb{C}^n\otimes\mathbb{C}^{2l}~(n\geq 2l>4)$ and a class of locally indistinguishable orthogonal product states with $2(n+2k+1)-7$ elements in $\mathbb{C}^n\otimes\mathbb{C}^{2k+1}~(n\geq 2k+1>5)$ are also constructed respectively. These classes of quantum states are then shown to be distinguishable by local operation and classical communication (LOCC) using a suitable $\mathbb{C}^2\otimes\mathbb{C}^2$ maximally entangled state respectively.

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Haiquan Li, Xilin Tang, Naihuan Jing, Ze Gu. 2019-08-09. LOCC distinguishable orthogonal product states with least entanglement resource. https://doi.org/10.1007/s10773-019-04140-5

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