Conditional preparation of a nonclassical state in the continuous-variable regime: Theoretical study

摘要: We study the characteristics of quantum state light produced by a conditional preparation protocol totally performed in continuous-variable regime. It relies on measurements intensity correlated bright twin beams emitted nondegenerate optical parametric oscillator above threshold. Analytical expressions as well computer simulations selected properties and efficiency are developed show that sub-Poissonian can be this technique. Projection onto given trigger value is studied then extended to finite band. The regime offers unique possibility improve dramatically choosing multiple selection bands thus generate great number states parallel.