Spatial entanglement in optical parametric oscillators with photonic crystals
de Castro, Maria M. · March, Miguel Angel Garcia · Gomila, Damia · Zambrini, Roberta
Original · EN
The effects of an intracavity photonic crystal in a multimode optical parametric oscillator are studied, with a special focus on quantum fluctuations. The capability to either stimulate or inhibit the spatial instability, lowering or increasing the parametric threshold, allows to control the intensity fluctuations and correlations. A significative quantum noise reduction and an increase of the range of squeezed quadratures are found above threshold where spatial Einstein-Podolsky-Rosen entanglement and inseparability are found.
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