Controlled remote state preparation via partially entangled quantum channel
Controlled remote state preparation via partially entangled quantum channel
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DOI：
10.1007/s11128-015-0917-0
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发表时间：
2014-12
影响因子：
2.5
通讯作者：
C. Wang;Zhi Zeng;Xihan Li
中科院分区：
文献类型：
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作者：
C. Wang;Zhi Zeng;Xihan Li
我们提出了两个通过部分纠缠信道的受控远程态制备协议。一个准备单量子位状态，另一个准备双量子位状态。与其他利用部分纠缠通道的受控远程态制备方案不同，我们的方案不需要辅助量子比特，也不需要两量子比特幺正变换，并且成功概率与量子通道的系数无关.对于任意单量子比特态和双量子比特态，成功概率分别为50%和25%。我们还表明，成功概率可以达到100%的限制类的状态.
We propose two controlled remote state preparation protocols via partially entangled channels. One prepares a single-qubit state, and the other prepares a two-qubit state. Different from other controlled remote state preparation schemes which also utilize partially entangled channels, neither auxiliary qubits nor two-qubit unitary transformations are required in our schemes, and the success probabilities are independent of the coefficients of the quantum channel. The success probabilities are 50 and 25 % for arbitrary single-qubit states and two-qubit states, respectively. We also show that the success probabilities can reach 100 % for restricted classes of states.