تقرير
Limit density of 2D quantum walk: zeroes of the weight function
| العنوان: | Limit density of 2D quantum walk: zeroes of the weight function |
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| المؤلفون: | Stefanak, Martin, Bezdekova, Iva, Jex, Igor |
| سنة النشر: | 2017 |
| المجموعة: | Quantum Physics |
| مصطلحات موضوعية: | Quantum Physics |
| الوصف: | Properties of the probability distribution generated by a discrete-time quantum walk, such as the number of peaks it contains, depend strongly on the choice of the initial condition. In the present paper we discuss from this point of view the model of the two-dimensional quantum walk analyzed in K. Watabe et al., Phys. Rev. A 77, 062331, (2008). We show that the limit density can be altered in such a way that it vanishes on the boundary or some line. Using this result one can suppress certain peaks in the probability distribution. The analysis is simplified considerably by choosing a more suitable basis of the coin space, namely the one formed by the eigenvectors of the coin operator. Comment: Accepted in Interdisciplinary Information Sciences (IIS), Proceedings of Quantum Simulations and Quantum Walks 2015, Yokohama, Japan |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/1701.00408 |
| رقم الأكسشن: | edsarx.1701.00408 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |