Yalçınkaya, İskender and Gedik, Zafer (2015) Qubit state transfer via discrete-time quantum walks. Journal of Physics A: Mathematical and Theoretical, 48 (22). ISSN 1751-8113 (Print) 1751-8121 (Online)
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Official URL: http://dx.doi.org/10.1088/1751-8113/48/22/225302
Abstract
We propose a scheme for perfect transfer of an unknown qubit state via the
discrete-time quantum walk on a line or a circle. For this purpose, we introduce
an additional coin operator which is applied at the end of the walk. This
operator does not depend on the state to be transferred. We show that perfect
state transfer over an arbitrary distance can be achieved only if the walk is
driven by an identity or a flip coin operator. Other biased coin operators and
the Hadamard coin allow perfect state transfer over finite distances only.
Furthermore, we show that quantum walks ending with a perfect state transfer
are periodic.
Item Type: | Article |
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Additional Information: | Article Number: 225302 |
Uncontrolled Keywords: | quantum walk; quantum state transfer; quantum state revival |
Subjects: | Q Science > QC Physics |
Divisions: | Faculty of Engineering and Natural Sciences > Basic Sciences > Physics Faculty of Engineering and Natural Sciences |
Depositing User: | Zafer Gedik |
Date Deposited: | 21 Dec 2015 21:05 |
Last Modified: | 26 Apr 2022 09:27 |
URI: | https://research.sabanciuniv.edu/id/eprint/28203 |