Estimation of squeezing in a nonlinear quadrature of a mechanical oscillator

摘要: Processing quantum information on continuous variables requires a highly nonlinear element in order to attain universality. Noise reduction processing such involves the use of phase state as non-Gaussian ancilla. A necessary condition for implement gate is that noise selected quadrature should decrease below level classical states. variance this ground ancilla, type squeezing, resource embedded these states and figure merit processes. Quantum optomechanics with levitating nanoparticles trapped optical potentials promising candidate achieve resources flexible way. We provide scheme reconstructing merit, which we call standard linear optomechanics, analysing effects mechanical decoherence processes reconstruction show all exhibit reduced are nonclassical.