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We present Bell tests for optical continuous variable systems, combining bothhybrid measurements (i.e. measuring both particle and wave aspects of light)and heralded amplifiers. We discuss two types of schemes, in which theamplifier is located either at the source, or at the parties' laboratories. Theinclusion of amplifiers helps to reduce the detrimental effect of losses in thesetup. In particular, we show that the requirements in terms of detectionefficiency and transmission losses are significantly reduced, approaching theexperimentally accessible regime.

Bell tests for continuous variable systems using hybrid measurements and heralded amplifiers