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arXiv · 1602.05841

Local and nonlocal probabilistic cloning of qubit states via partially entangled twin photons

Nataly Cisternas·Gabriel Araneda·Omar Jiménez·Aldo Delgado
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Abstract

Recently, the nonlocal optimal probabilistic cloning (NLOPC) of two non-orthogonal qubit states has been proposed [Phys. Rev. A 86, 052332 (2012)] by means of an experimental setup based on a pair of twin photons in a maximally entangled state. Here we study the performance of the NLOPC protocol when implemented via a partially entangled state. We show that the errors introduced by the use of partial entanglement can be undone by applying a quantum state discrimination process. Since quantum state discrimination is a probabilistic process the correction succeeds with a certain probability but produces perfect clones. We also studied how to modified the setup to produce local copies.

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Nataly Cisternas, Gabriel Araneda, Omar Jiménez, Aldo Delgado. 2016-02-18. Local and nonlocal probabilistic cloning of qubit states via partially entangled twin photons. https://arxiv.org/abs/1602.05841

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