https://www.selleckchem.com/products/ro-3306.html
A new scheme has been proposed to realize the enhancement of phase sensitivity based on an SU(1,1) interferometer. Compared with the classical Mach-Zehnder interferometer, the SU(1,1) interferometer is splitted and recombined by an optical parametric amplifier and the phase sensitivity can beat shot noise limit by adjusting the parametric strength. In this model, the inputs of the SU(1,1) interferometer are bright entangled twin beams generated from four wave mixing and the detection method is substract intensity difference with one of
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