Asymptotic entanglement in the discrete-time quantum walk

Details Asymptotic entanglement in the discrete-time quantum walk Asymptotic entanglement in the discrete-time quantum walk

2007-09-20

arxiv.org/abs/0709.3279v1

Annals of the 1st Workshop on Quantum Computation and Information, pp. 189-200, UCPel, 9-11 october 2006, Pelotas, RS, Brazil

Physics

Quantum Physics

10 pages, pdf

Scientific paper

The coin-position entanglement generated by the evolution operator of a discrete--time quantum walk converges, in the long time limit, to a well defined value which depends on the initial state. We also discuss the asymptotic bi-partite entanglement generated by several non-separable coin operations for two coherent quantum walkers, for which the entropy of entanglement increases logarithmically.

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