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Entanglement purification for arbitrary unknown ionic states via linear optics

Ming Yang·Wei Song·Zhuo-Liang Cao
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Abstract

An entanglement purification scheme for arbitrary unknown(mixed and pure non-maximally) entangled ionic states is proposed by using linear optical elements. The main advantage of the scheme is that not only two-ion maximally entangled pairs but also four-ion maximally entangled pairs can be extracted from the less entangled pairs. The scheme is within current technology.

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Ming Yang, Wei Song, Zhuo-Liang Cao. 2005-01-15. Entanglement purification for arbitrary unknown ionic states via linear optics. https://doi.org/10.1103/physreva.71.012308

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