Spectral control of quantum correlations in Four wave mixing using dressing fields

Abstract

We present a microscopic description of dressed four wave mixing (4WM) demonstrating spectral control of quantum correlations. Starting from a double Λ model for a single pump 4WM, we include a dressing field coupling the excited level which leads to a six wave mixing process (6WM). The model describes the enhancement of the amplification and intensity difference squeezing due to the interaction of the dressing field, according to the experimental parameters. Moreover, the model predicts that this mechanism allows the spectral control of the quantum correlations between pair of side-bands by just tuning accordingly the dressing field.

Quantum-enhanced super-sensitivity of Mach–Zehnder interferometer using squeezed Kerr state

“…48 On the other hand, the Kerr effect occurring in third-order nonlinear χ (3) media is being used to perceive quantum nondemolition measurements 49,50 and to generate quantum superpositions 15,51 as well as squeezing 52 and entanglement. 53,54 The most common methods of generating nonclassical light are parametric downconversion (PDC), 48 four-wave mixing, 55,56 and the Kerr effect. 57 Unlike the former two approaches, squeezing via the Kerr interaction 58,59 is inherently phase-matched, which allows for flexibility in the wavelength of the probe light.…”