Optimal asymmetric economical state-dependent cloners |
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Authors: | Wen-Hai Zhang Liu Ye |
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Affiliation: | a School of Physics and Material Science, Anhui University, No. 3 Feixi Road, Hefei, Anhui 230039, PR China b Department of Physics and Electronic Engineering, Hefei Teachers College, Hefei 230061, PR China |
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Abstract: | We present the optimal asymmetric economical 1-3 phase-covariant and real state cloning in two-dimensions. The fidelity distributions of copies of two state-dependent cloners are the same, and higher than that of the optimal asymmetric universal quantum cloning. Using a quantum network, we calculate the single-qubit rotation angles to implement two symmetric economical state-dependent cloners. We also propose an experimentally feasible scheme to implement the optimal asymmetric economical 1-3 phase-covariant cloner. The scheme can be realized with the success probability of 100%. |
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Keywords: | 03.67.&minus a |
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