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Entanglement purification for arbitrary unknown ionic states via linear optics

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arxiv quant-ph/0312087 v2 pith:525K4N2W submitted 2003-12-10 quant-ph

Entanglement purification for arbitrary unknown ionic states via linear optics

classification quant-ph
keywords entangledpairsschemearbitraryentanglementioniclinearmaximally
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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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