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arXiv · 1109.5335

Optimal ancilla-free phase-covariant telecloning of qudits via nonmaximally entangled states

Xin-Wen Wang·Guo-Jian Yang
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Abstract

We study the one-to-two phase-covariant telecloning of a qudit without ancilla. We show that the fidelity of the two clones can reach that of the clones in the optimal ancilla-based one-to-two phase-covariant cloning and telecloning, i.e., the limitation of quantum mechanics. More interestingly, it is a nonmaximally entangled state rather than the maximally entangled state that can be used to realize such a telecloning task.

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Xin-Wen Wang, Guo-Jian Yang. 2011-09-25. Optimal ancilla-free phase-covariant telecloning of qudits via nonmaximally entangled states. https://doi.org/10.1088/0256-307x%2F27%2F10%2F100303

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