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Saturating the Maximum Success Probability Bound for Noiseless Linear Amplification using Linear Optics
Joshua J. Guanzon, Matthew S. Winnel, Deepesh Singh, Austin P. Lund, Timothy C. Ralph
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A noiseless linear amplifier (NLA) performs the highest quality amplification allowable under the rules of quantum physics. Unfortunately, these same rules conspire against us via the no-cloning theorem, which constrains NLA operations to the domain of probabilistic processes. Nevertheless, they are useful for a wide variety of quantum protocols, with numerous proposals assuming access to an optimal NLA device which performs with the maximum possible success probability. Here we propose the first linear optics NLA protocol which asymptotically achieves this success probability bound, by modifying the Knill-Laflamme-Milburn near-deterministic teleporter into an amplifier.
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