Quantum amplification and purification of noisy coherent states

Quantum-limited amplifiers increase the amplitude of quantum signals at the price of introducing additional noise. Quantum purification protocols operate in the reverse way, by reducing the noise while attenuating the signal. Here we investigate a scenario that interpolates between these two extreme...

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Auteurs principaux: Zhao, X, Chiribella, G
Format: Journal article
Publié: American Physical Society 2017