期刊
NATURAL COMPUTING
卷 18, 期 4, 页码 885-899出版社
SPRINGER
DOI: 10.1007/s11047-019-09762-6
关键词
Quantum walks; Dynamical systems
Quantum cellular automata are arrays of identical finite-dimensional quantum systems, evolving in discrete-time steps by iterating a unitary operator G. Moreover the global evolution G is required to be causal (it propagates information at a bounded speed) and translation-invariant (it acts everywhere the same). Quantum cellular automata provide a model/architecture for distributed quantum computation. More generally, they encompass most of discrete-space discrete-time quantum theory. We give an overview of their theory, with particular focus on structure results; computability and universality results; and quantum simulation results.
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