期刊
NEW JOURNAL OF PHYSICS
卷 12, 期 -, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1367-2630/12/10/103010
关键词
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资金
- Qatar National Research Fund [1-7-7-6]
- Australian Research Council Center of Excellence in Quantum Computer Technology
- Royal Society of New Zealand
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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