Distinguishability of generalized Bell states in arbitrary dimension system via one-way local operations and classical communication
Distinguishability of generalized Bell states in arbitrary dimension system via one-way local operations and classical communication
复制标题
任意维系统中广义贝尔态通过单向局部运算和经典通信的可区分性
DOI:
10.1007/s11128-021-02990-9
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发表时间:
2021-02
影响因子:
2.5
通讯作者:
王彩虹
中科院分区:
文献类型:
--
作者:
杨迎辉;穆高峰;原江涛;王彩虹
We investigate the distinguishability of generalized Bell states (GBSs) in arbitrary dimension system by one-way local operations and classical communication (LOCC). Firstly, by analyzing three local unitary transformations, we define two concepts for each setof GBSs, i.e., an admissible solutions setand agenuinelynonadmissible solutions set. Then, we show that a setof any GBSs can be distinguished by one-way LOCC ifis nonempty. Fan’s and Wang et al.’s results (Phys Rev Lett 92:177905, 2004: Phys Rev A 99:022307, 2019) can be covered by our result. Comparing with Wang et al.’s result, our successful ratio of local distinguishability improves markedly, especially for even dimension system. In some cases, it can increase by nearly. However, there are still some cases where our method cannot work. For the uncovered cases, we define an uncovered set and present that there is no method which is more powerful than ours for local discrimination of GBSs if the uncovered set is a subset of the different set of GBSs.
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