Noiseless linear amplification via weak measurements

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dc.creatorMenzies, David
dc.creatorCroke, Sarah
dc.date2009-03-24
dc.date.accessioned2026-07-07T12:56:19Z
dc.date.available2026-07-07T12:56:19Z
dc.descriptionWe discuss the recently introduced concept of non-deterministic noiseless linear amplification, demonstrating that such an operation can only be performed perfectly with vanishing probability of success. We show that a weak measurement, which imprints the weak value of an observable of a pre-selected and post-selected system onto a probe system, can be used to approximate probabilistic noiseless amplification. This result may be applied to various tasks in continuous variable quantum information, including entanglement concentration, probabilistic cloning, and in quantum repeaters. We discuss the application of our scheme to probabilistic cloning of weak coherent states.
dc.description4 pages, 2 figures
dc.identifierhttps://arxiv.org/abs/0903.4181
dc.identifierhttp://arxiv.org/abs/0903.4181
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/224541
dc.subjectQuantum Physics
dc.titleNoiseless linear amplification via weak measurements
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