TL;DR
This paper introduces a linear optics protocol for noiseless linear amplification that asymptotically reaches the maximum success probability allowed by quantum physics, improving the efficiency of quantum amplification processes.
Contribution
It presents the first linear optics NLA protocol that asymptotically saturates the maximum success probability bound, adapting the KLM teleporter for amplification.
Findings
Achieves success probability bound asymptotically
Modifies KLM teleporter for amplification
Enhances quantum protocol efficiency
Abstract
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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