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Quantum cloning machines for equatorial qubits

Quantum Physics 2009-11-07 v4

Abstract

Quantum cloning machines for equatorial qubits are studied. For the case of 1 to 2 phase-covariant quantum cloning machine, we present the networks consisting of quantum gates to realize the quantum cloning transformations. The copied equatorial qubits are shown to be separable by using Peres-Horodecki criterion. The optimal 1 to M phase-covariant quantum cloning transformations are given.

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Cite

@article{arxiv.quant-ph/0101101,
  title  = {Quantum cloning machines for equatorial qubits},
  author = {Heng Fan and Keiji Matsumoto and Xiang-Bin Wang and Miki Wadati},
  journal= {arXiv preprint arXiv:quant-ph/0101101},
  year   = {2009}
}

Comments

Revtex, 9 pages