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Squeezed Versus Non-Gaussian Fluctuations in Resonance Fluorescence |
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PP: 2849-2857 |
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Author(s) |
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Héctor M. Castro-Beltrán,
Luis Gutiérrez,
Levente Horvath,
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Abstract |
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| We study theoretically the fluorescence of a two-level atom driven by a laser of weak to moderate intensity, that is, a regime
where squeezing would occur. Close to saturation atomic fluctuations dominate and become non-Gaussian, degrading the squeezing.
Using Bloch equations and quantum jump trajectories we find that allowing a moderate degree of non-linearity, conditional homodyne
detection [G.T. Foster, L.A. Orozco, H.M. Castro-Beltran, H.J. Carmichael, Phys. Rev. Lett. 85, pp. 3149-3152, 2000] would actually
help in observing the elusive squeezing in the fluorescence by increasing the size of the characteristic negative spectrum. |
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