Two Quantum Coins Sharing a Walker |
| |
Authors: | Yang Yu-Guang Han Xiao-Ying Li Dan Zhou Yi-Hua Shi Wei-Min |
| |
Institution: | 1.Faculty of Information Technology, Beijing University of Technology, Beijing, 100124, China ;2.Beijing Key Laboratory of Trusted Computing, Beijing, 100124, China ;3.College of Computer Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China ; |
| |
Abstract: | For classical random walks, changing or not changing coins makes a trivial influence on the random-walk behaviors. In this paper, we investigate the quantum walk where a walker’s movement is controlled by two initially independent coins alternately partially or fully after each step. We observe that there exist complicated inter-coin correlations in the quantum walk. Specifically, we study the correlations of two coins by tracing out the walker, and analyze classical, general, and quantum correlations between two coins in terms of classical mutual information, quantum mutual information, and measurement-induced disturbance. Our analysis shows different quantum features from that in classical random walks. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|