Chinese Physics B ( IF 1.5 ) Pub Date : 2021-06-03 , DOI: 10.1088/1674-1056/abea95 Shexiang Jiang , Bao Zhao , Xingzhu Liang
This paper proposes a three-dimensional (3D) controlled quantum teleportation scheme for an unknown single-qutrit state. The scheme is first introduced in an ideal environment, and its detailed implementation is described via the transformation of the quantum system. Four types of 3D-Pauli-like noise corresponding to Weyl operators are created by Kraus operators: trit-flip, t-phase-flip, trit-phase-flip, and t-depolarizing. Then, this scheme is analyzed in terms of four types of noisy channel with memory. For each type of noise, the average fidelity is calculated as a function of memory and noise parameters, which is afterwards compared with classical fidelity. The results demonstrate that for trit-flip and t-depolarizing noises, memory will increase the average fidelity regardless of the noise parameter. However, for t-phase-flip and trit-phase-flip noises, memory may become ineffective in increasing the average fidelity above a certain noise threshold.
中文翻译:
具有记忆的噪声信道中未知单量子态的可控量子隐形传态安徽省高等学校自然科学研究项目(批准号KJ2020A0301)和芜湖市2020年科技计划项目(批准) 2020yf48 号)。
本文提出了一种用于未知单量子态的三维(3D)受控量子隐形传态方案。该方案首先在理想环境中引入,通过量子系统的变换描述其具体实现。Kraus 算子创建了四种与 Weyl 算子相对应的类 3D-Pauli 噪声:trit-flip、t-phase-flip、trit-phase-flip 和 t-depolarizing。然后,针对四种带记忆的噪声信道对该方案进行了分析。对于每种类型的噪声,平均保真度计算为记忆和噪声参数的函数,然后与经典保真度进行比较。结果表明,对于 trit-flip 和 t-去极化噪声,无论噪声参数如何,记忆都会增加平均保真度。然而,