0408183v3

related topics
{classical, space, random}
{energy, state, states}
{time, wave, function}
{time, decoherence, evolution}
{field, particle, equation}
{level, atom, field}
{qubit, qubits, gate}
{state, algorithm, problem}
{cos, sin, state}

Generalized Quantum Walk in Momentum Space

A. Romanelli, A. Auyuanet, R. Siri, G. Abal, R. Donangelo

abstract: 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.

oai_identifier:
oai:arXiv.org:quant-ph/0408183
categories:
quant-ph
comments:
11 pages, 5 figures
doi:
10.1016/j.physa.2005.01.026
arxiv_id:
quant-ph/0408183
created:
2004-08-30
updated:
2004-12-09

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