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Distillability of Inseparable Quantum Systems
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Distillability of Inseparable Quantum Systems
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quant-ph
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inseparableprotocolsystemstimesapplybennettcriteriondistill
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We apply the inseparability criterion for $2 \times 2$ systems, local filtering and Bennett et al. purification protocol [Phys. Rev. Lett. {\bf 76}, 722 (1996)] to show how to distill {\it any} inseparable $2\times 2$ system. The extended protocol is illustrated geometrically by means of the state parameters in the Hilbert-Schmidt space.
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