تقرير
A counterintuitive role of geometry in transport by quantum walks
| العنوان: | A counterintuitive role of geometry in transport by quantum walks |
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| المؤلفون: | Mareš, Jan, Novotný, Jaroslav, Štefaňák, Martin, Jex, Igor |
| المصدر: | Phys. Rev. A 101, 032113 (2020) |
| سنة النشر: | 2019 |
| المجموعة: | Quantum Physics |
| مصطلحات موضوعية: | Quantum Physics |
| الوصف: | 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 non-classical effects using the concept of trapped states for several intriguing geometries including the ladder graph, the Cayley tree and its modifications. Comment: 7 pages, 9 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevA.101.032113 |
| URL الوصول: | http://arxiv.org/abs/1908.10173 |
| رقم الأكسشن: | edsarx.1908.10173 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevA.101.032113 |
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