Physics – Quantum Physics
Scientific paper
2008-04-03
Optics express 16 (2008) 9351
Physics
Quantum Physics
Scientific paper
10.1364/OE.16.009351
We report the first experimental observation of bright EPR beams produced by a type-II optical parametric oscillator operating above threshold at frequency degeneracy. The degenerate operation is obtained by introducing a birefringent plate inside the cavity resulting in phase locking. After filtering the pump noise, which plays a critical role, continuous-variable EPR correlations between the orthogonally polarized signal and idler beams are demonstrated.
Coudreau Thomas
D'Auria Virginia
Fabre Claude
Keller Gaëlle
Laurat Julien
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