Linear amplification and quantum cloning for non-Gaussian continuous variables
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We investigate phase-insensitive linear amplification at the quantum limit for single-and two-mode states and show that there exists a broad class of non-Gaussian states whose nonclassicality survives even at an arbitrarily large gain. We identify the corresponding observable nonclassical effects and find that they include, remarkably, two-mode entanglement. The implications of our results for quantum cloning outside the Gaussian regime are also addressed. IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.
author list (cited authors)
Nha, H., Milburn, G. J., & Carmichael, H. J.
complete list of authors
Nha, Hyunchul||Milburn, GJ||Carmichael, HJ