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Open Quantum Systems Decoherence
Quantum Walks on a Random Environment
arXiv
Authors: Yue Yin, D. E. Katsanos, S. N. Evangelou
Year
2007
Paper ID
49421
Status
Preprint
Abstract Read
~2 min
Abstract Words
101
Citations
N/A
Abstract
Quantum walks are considered in a one-dimensional random medium characterized by static or dynamic disorder. Quantum interference for static disorder can lead to Anderson localization which completely hinders the quantum walk and it is contrasted with the decoherence effect of dynamic disorder having strength W, where a quantum to classical crossover at time tcpropto W-2 transforms the quantum walk into an ordinary random walk with diffusive spreading. We demonstrate these localization and decoherence phenomena in quantum carpets of the observed time evolution and examine in detail a dimer lattice which corresponds to a single qubit subject to randomness.
Why This Paper Matters
- This paper contributes to the Open Quantum Systems & Decoherence research area in the Quantum Articles archive.
- It adds a 2007 reference point for readers tracking recent quantum research.
- Quantum walks are considered in a one-dimensional random medium characterized by static or dynamic disorder.
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