Abstract
The quantum state purification is very important in quantum information processing. Our purpose is to purify arbitrary mixed state into some pure state. We present one simple method to purify arbitrary mixed state from its normal Schmidt decomposition. This scheme is also simplified by using only two special unitary transformations, and can be used to prove the typical entanglement thresholds for random mixed states.
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Acknowledgements
This work is supported by the Foundation of He’nan Educational Committee (No. 13A413750, 13A413747, 12A510022), the Natural Science Foundation of He’nan Province of China (No. 132300410393, 122102210543, 122102210544), and Xuchang Municipal Natural Science Foundation (No. 5018, 1101059), the National Natural Science Foundation of China (No. 11226336, 61170272), and the Fundamental Research Funds for the Central Universities (No. SWJTU11BR174).
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Ping, Y., Li, H., Pan, X. et al. Optimal Purification of Arbitrary Quantum Mixed States. Int J Theor Phys 52, 4367–4373 (2013). https://doi.org/10.1007/s10773-013-1755-4
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DOI: https://doi.org/10.1007/s10773-013-1755-4