Linear amplification and quantum cloning for non-Gaussian continuous variables

Details Linear amplification and quantum cloning for non-Gaussian continuous variables Linear amplification and quantum cloning for non-Gaussian continuous variables

2010-09-13

arxiv.org/abs/1009.2306v2

New J.Phys.12:103010,2010

Physics

Quantum Physics

published version with reference update

Scientific paper

10.1088/1367-2630/12/10/103010

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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