Entanglement measurement with discrete multiple coin quantum walks

Details Entanglement measurement with discrete multiple coin quantum walks Entanglement measurement with discrete multiple coin quantum walks

2005-07-19

arxiv.org/abs/quant-ph/0507184v1

Physics

Quantum Physics

9 pages, IOP style

Scientific paper

10.1088/0305-4470/38/42/008

Within a special multi-coin quantum walk scheme we analyze the effect of the entanglement of the initial coin state. For states with a special entanglement structure it is shown that this entanglement can be meausured with the mean value of the walk, which depends on the i-concurrence of the initial coin state. Further on the entanglement evolution is investigated and it is shown that the symmetry of the probability distribution is reflected by the symmetry of the entanglement distribution.

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