Squeezing via spontaneous rotational symmetry breaking in a four-wave mixing cavity

Details Squeezing via spontaneous rotational symmetry breaking in a four-wave mixing cavity Squeezing via spontaneous rotational symmetry breaking in a four-wave mixing cavity

2009-04-10

arxiv.org/abs/0904.1624v1

IEEE Journal of Quantum Electronics 45, 1404-1414 (2009)

Physics

Quantum Physics

9 pages, 3 figures

Scientific paper

10.1109/JQE.2009.2028616

We predict the generation of noncritically squeezed light through the spontaneous rotational symmetry breaking occurring in a Kerr cavity. The model considers a $\chi^{(3)}$ cavity that is pumped by two Gaussian beams of frequencies $\omega_{1}$ and $\omega_{2}$. The cavity configuration is such that two signal modes of equal frequency $\omega_{\mathrm{s}}=(\omega_{1}% +\omega_{2})/2$ are generated, these signal fields being first order Laguerre--Gauss modes. In this system a spontaneous breaking of the rotational symmetry occurs as the signal field corresponds to a Hermite--Gauss TEM mode. This symmetry breaking leads to the perfect and non--critical (i.e., non dependent on the parameter values) squeezing of the angular momentum of the output TEM mode, which is another TEM mode spatially orthogonal to that in which bright emission occurs.

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