Qubit state transfer via one-dimensional discrete-time quantum walk
Qubit state transfer via one-dimensional discrete-time quantum walk
复制标题
通过一维离散时间量子行走的量子位状态转移
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
Z. Gedik
中科院分区：
文献类型：
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作者：
I. Yalçinkaya;Z. Gedik
我们提出了一个通过离散时间量子在直线或圆上行走来实现任意量子比特态的完美传输的方案。为此目的，我们利用了一个更多的硬币运营商，这是应用在年底的步行。这个额外的硬币运算符不依赖于要转移的状态。我们证明了在任意距离上的完美状态转移只能通过
身份和掷硬币操作员。完美的状态转移也可以通过使用无偏硬币算子来实现，但仅限于有限数量的距离。
We propose a scheme for perfect transfer of an arbitrary qubit state via discrete-time quantum walk on a line or a circle. For this purpose, we take the advantage of one more coin operator which is applied at the end of the walk. This additional coin operator does not depend on the state to be transferred. We show that perfect state transfer over arbitrary distances can be achieved only
for identity and flip coin operators. Perfect state transfer can also be realized by using an unbiased coin operator but only for a finite number of distances.