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We investigate the effect of RF power on the generation of two frequencies with equal power using four different modulation formats for quantum atom interferometry with Rb atoms. The power-efficiency and stability of each modulation are discussed.

A study on first-order polarization correlation in propagating vector speckle fields is carried out. Vector speckle field, generated by scattering of Poincare beam, is propagated through a spherical and a cylindrical lens. The first-order polarization correlation was experimentally constructed from intensity images of vector speckle fields at various planes before and after the focal plane. We have shown with supporting experimental and simulation results that polarization correlation vortex experiences charge inversion while vector speckle field propagates through a cylindrical lens. The importance of this study relies on the fact that it provides insight into one of the important properties of light, i.e., the phase between the orthogonal polarization components, how it evolves as the optical field propagates through various optical components. This study could find application in optical data processing, imaging, sensing, speckle meteorology, phase unwrapping, optical communication, etc.

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