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arXiv · 1301.3183

Violation of Bell's inequalities with pre-amplified homodyne detection

G. Torlai·G. McKeown·P. Marek·R. Filip·H. Jeong·M. Paternostro·G. De Chiara
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Abstract

We show that the use of probabilistic noiseless amplification in entangled coherent state-based schemes for the test of quantum non locality provides substantial advantages. The threshold amplitude to falsify a Bell-CHSH non locality test, in fact, is significantly reduced when amplification is embedded into the test itself. Such a beneficial effect holds also in the presence of detection-inefficiency. Our study helps in affirming noiseless amplification as a valuable tool for coherent information processing and the generation of strongly non classical states of bosonic systems.

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G. Torlai, G. McKeown, P. Marek, R. Filip, H. Jeong, M. Paternostro, G. De Chiara. 2013-01-14. Violation of Bell's inequalities with pre-amplified homodyne detection. https://doi.org/10.1103/physreva.87.052112

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