Maximal Violation of Bell Inequalities using Continuous Variables   Measurements
  We propose a whole family of physical states that yield a violation of the Bell CHSH inequality arbitrarily close to its maximum value, when using quadrature phase homodyne detection. This result is based on a new binning process called root binning, that is used to transform the continuous variables measurements into binary results needed for the tests of quantum mechanics versus local realistic theories. A physical process in order to produce such states is also suggested. The use of high-efficiency spacelike separated homodyne detections with these states and this binning process would result in a conclusive loophole-free test of quantum mechanics. 
J\'erome Wenger, Mohammad Hafezi, Fr\'ed\'eric Grosshans, Rosa   Tualle-Brouri and Philippe Grangier