The masking condition for the quantum state in two-dimensional Hilbert space  

作　　者：Mei-yi Wang Su-juan Zhang Chen-ming Bai Lu Liu 

机构地区：[1]Department of Mathematics and Physics,Shijiazhuang Tiedao University,Shijiazhuang 050043,China

出　　处：《Communications in Theoretical Physics》2022年第11期77-83,共7页理论物理通讯（英文版）

基　　金：supported by the Natural Science Foundation of Hebei Province(Grant No.A2019210057)。

摘　　要：This paper focuses on quantum information masking for the quantum state in two-dimensional Hilbert space.We present a system of equations as the condition of quantum information masking.It is shown that quantum information contained in a single qubit state can be masked,if and only if the coefficients of the quantum state satisfy the given system of equations.By observing the characteristics of non-orthogonal maskable quantum states,we obtain a related conclusion,namely,if two non-orthogonal two-qubit quantum states can mask a single qubit state,they have the same number of terms and the same basis.Finally,for maskable orthogonal quantum states,we analyze two special examples and give their images for an intuitive description.

关 键 词：quantum information masking limited conditions TWO-QUBIT 

分 类 号：O413[理学—理论物理]