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arXiv · 0809.0034

Quantum random walks without walking

K Manouchehri·J. B. Wang
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Abstract

Quantum random walks have received much interest due to their non-intuitive dynamics, which may hold the key to a new generation of quantum algorithms. What remains a major challenge is a physical realization that is experimentally viable and not limited to special connectivity criteria. We present a scheme for walking on arbitrarily complex graphs, which can be realized using a variety of quantum systems such as a BEC trapped inside an optical lattice. This scheme is particularly elegant since the walker is not required to physically step between the nodes; only flipping coins is sufficient.

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K Manouchehri, J. B. Wang. 2008-08-30. Quantum random walks without walking. https://doi.org/10.1103/physreva.80.060304

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