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arXiv · 0709.0212

Non-critically squeezed light via spontaneous rotational symmetry breaking

Carlos Navarrete-Benlloch·Eugenio Roldan·German J. de Valcarcel
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Abstract

We theoretically address squeezed light generation through the spontaneous breaking of the rotational invariance occuring in a type I degenerate optical parametric oscillator (DOPO) pumped above threshold. We show that a DOPO with spherical mirrors, in which the signal and idler fields correspond to first order Laguerre-Gauss modes, produces a perfectly squeezed vacuum with the shape of a Hermite-Gauss mode, within the linearized theory. This occurs at any pumping level above threshold, hence the phenomenon is non-critical. Imperfections of the rotational symmetry, due e.g. to cavity anisotropy, are shown to have a small impact, hence the result is not singular.

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Carlos Navarrete-Benlloch, Eugenio Roldan, German J. de Valcarcel. 2008-02-29. Non-critically squeezed light via spontaneous rotational symmetry breaking. https://doi.org/10.1103/physrevlett.100.203601

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