ASYMMETRIC TWO-OUTPUT QUANTUM PROCESSOR IN ANY DIMENSION

IULIA GHIU; GUNNAR BJOERK

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ASYMMETRIC TWO-OUTPUT QUANTUM PROCESSOR IN ANY DIMENSION

机译：任何尺寸的不对称两输出量子处理器

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摘要

We propose two different implementations of an asymmetric two-output probabilistic quantum processor. One of them is constructed by combining asymmetric telecloning with a quantum gate array. We analyze the efficiency of this processor by evaluating the fidelities between the desired operation and the ones generated by the processor and show that the two output states are the same as the ones produced by the optimal universal asymmetric Pauli cloning machine and have a success probability of 1/2. We show further that we can perform the same one-qubit operation with unity probability at the cost of using nonlocal operations. We finally generalize the two schemes for D-level systems and find that the local ones are successful with a probability of I/D and the nonlocal generalized scheme is always successful.

机译：我们提出了两种不同的非对称两输出概率量子处理器的实现。其中之一是通过将非对称远射克隆与量子门阵列相结合而构造的。通过评估所需操作与处理器生成的保真度之间的保真度，我们对该处理器的效率进行了分析，结果表明这两个输出状态与最佳通用非对称Pauli克隆机生成的输出状态相同，并且成功概率为1/2。我们进一步证明，我们可以以使用非局部运算为代价，以单位概率执行相同的单比特运算。最后，我们对D级系统的这两种方案进行了归纳，发现本地方案以I / D的概率成功了，而非本地化方案总是成功的。

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来源
《Romanian journal of physics》 |2008年第6期|725-737|共13页
作者
IULIA GHIU; GUNNAR BJOERK;
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作者单位

Centre for Advanced Quantum Physics, University of Bucharest, P.O. Box MG-1 i, R-077125, Bucharest-Magurele, Romania School of Information and Communication Technology, Royal Institute of Technology (KTH), Electrum 229, SE 164 40 Kista, Sweden;

School of Information and Communication Technology, Royal Institute of Technology (KTH), Electrum 229, SE 164 40 Kista, Sweden;

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正文语种 eng
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关键词
quantum cloning; quantum processor;

机译：量子克隆量子处理器;

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ASYMMETRIC TWO-OUTPUT QUANTUM PROCESSOR IN ANY DIMENSION

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