Controlled quantum teleportation of an unknown single-qutrit state in noisy channels with memory  

作　　者：Shexiang Jiang Bao Zhao Xingzhu Liang 蒋社想;赵宝;梁兴柱(School of Computer Science and Engineering,Anhui University of Science and Technology,Huainan 232001,China)

机构地区：[1]School of Computer Science and Engineering,Anhui University of Science and Technology,Huainan 232001,China

出　　处：《Chinese Physics B》2021年第6期116-125,共10页中国物理B（英文版）

基　　金：supported by the Natural Science Research Project of Colleges and Universities in Anhui Province,China (Grant No. KJ2020A0301);the Science and Technology Project of Wuhu City in 2020 (Grant No. 2020yf48)。

摘　　要：This paper proposes a three-dimensional(3 D) 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 3 D-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-phaseflip noises, memory may become ineffective in increasing the average fidelity above a certain noise threshold.

关 键 词：three-dimensional quantum teleportation FIDELITY Pauli noise memory channel 

分 类 号：O413[理学—理论物理]