Generalized Quantum Walk in Momentum Space

Details Generalized Quantum Walk in Momentum Space Generalized Quantum Walk in Momentum Space

2004-08-30

arxiv.org/abs/quant-ph/0408183v3

Physics

Quantum Physics

11 pages, 5 figures

Scientific paper

10.1016/j.physa.2005.01.026

We consider a new model of quantum walk on a one-dimensional momentum space that includes both discrete jumps and continuous drift. Its time evolution has two stages; a Markov diffusion followed by localized dynamics. As in the well known quantum kicked rotor, this model can be mapped into a localized one-dimensional Anderson model. For exceptional (rational) values of its scale parameter, the system exhibits resonant behavior and reduce to the usual discrete time quantum walk on the line.

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