Quantum state transfer on unsymmetrical graphs via discrete-time quantum walk
| Autor: | Yi-Hua Zhou, Dan Li, Jing-Ru Dong, Wei-Feng Cao, Wei-Min Shi, Yu-Guang Yang |
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| Rok vydání: | 2019 |
| Předmět: |
Physics
Nuclear and High Energy Physics Complete graph General Physics and Astronomy A* search algorithm Astronomy and Astrophysics 01 natural sciences Complete bipartite graph 010305 fluids & plasmas law.invention Combinatorics Discrete time and continuous time Quantum cryptography law 0103 physical sciences Quantum walk 010306 general physics Quantum information science Quantum computer |
| Zdroj: | Modern Physics Letters A. 34:1950317 |
| ISSN: | 1793-6632 0217-7323 |
| DOI: | 10.1142/s0217732319503176 |
| Popis: | Perfect state transfer can be achieved between two marked vertices of graphs like a star graph, a complete graph with self-loops and a complete bipartite graph, and two-dimensional Lattice by means of discrete-time quantum walk. In this paper, we investigate the quality of quantum state transfer between two marked vertices of an unsymmetrical graph like the butterfly network. Our numerical results support the conjecture that the fidelity of state transfer depends on the quantum state to be transferred dynamically. The butterfly network is a typical example studied in networking coding. Therefore, these results can provide a clue to the construction of quantum network coding schemes. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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