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Three-qubit Protocol to Purify Generalized Werner States

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Abstract

Generalizing the two-qubit purification method of Bennett et al. (Phys. Rev. Lett. 76, 722–725 1996), we present a three-qubit protocol, to purify partially entangled pairs of generalized Werner states, with application of controlled-not gates, projective measurements and Pauli rotations. The protocol is simple and recyclable and the fidelity of the purified states converge rapidly to 1, after a few cycles.

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  1. Shahid Chamran University, Ahvaz, Iran

    M. Jafarpour & F. Ashrafpouri

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Jafarpour, M., Ashrafpouri, F. Three-qubit Protocol to Purify Generalized Werner States. Int J Theor Phys 54, 1689–1697 (2015). https://doi.org/10.1007/s10773-014-2370-8

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