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arXiv · 1009.2306

Linear amplification and quantum cloning for non-Gaussian continuous variables

Hyunchul Nha·G. J. Milburn·H. J. Carmichael
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Abstract

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.

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Hyunchul Nha, G. J. Milburn, H. J. Carmichael. 2010-10-06. Linear amplification and quantum cloning for non-Gaussian continuous variables. https://doi.org/10.1088/1367-2630%2F12%2F10%2F103010

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