Counterintuitive role of geometry in transport by quantum walks

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F20%3A00340320" target="_blank" >RIV/68407700:21340/20:00340320 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/PhysRevA.101.032113" target="_blank" >https://doi.org/10.1103/PhysRevA.101.032113</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevA.101.032113" target="_blank" >10.1103/PhysRevA.101.032113</a>

Result language
angličtina
Original language name
Counterintuitive role of geometry in transport by quantum walks
Original language description
Quantum walks are accepted as a generic model for quantum transport. The character of the transport crucially depends on the properties of the walk like its geometry and the driving coin. We demonstrate that increasing transport distance between source and target or adding redundant branches to the actual graph may surprisingly result in a significant enhancement of transport efficiency. We explain analytically the observed nonclassical effects using the concept of trapped states for several intriguing geometries, including the ladder graph, the Cayley tree, and its modifications.
Czech name
—
Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10306 - Optics (including laser optics and quantum optics)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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