Noise-enhanced quantum transport on a closed loop using quantum walks

Noise-enhanced quantum transport on a closed loop using quantum walks We study the effect of noise on the transport of a quantum state from a closed loop of $$n$$ n -sites with one of the sites as a sink. Using a discrete-time quantum walk dynamics, we demonstrate that the transport efficiency can be enhanced with noise when the number of sites in the loop is small and reduced when the number of sites in the loop grows. By using the concept of measurement induced disturbance, we identify the regimes in which genuine quantum effects are responsible for the enhanced transport. Quantum Information Processing Springer Journals

Noise-enhanced quantum transport on a closed loop using quantum walks

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Springer US
Copyright © 2014 by Springer Science+Business Media New York
Physics; Quantum Information Technology, Spintronics; Quantum Computing; Data Structures, Cryptology and Information Theory; Quantum Physics; Mathematical Physics
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