Einstein-Podolsky-Rosen correlations in second-harmonic generation

Lodahl, P. (2003) Einstein-Podolsky-Rosen correlations in second-harmonic generation. Physical review A: Atomic, molecular, and optical physics, 68 (2). 023806-1. ISSN 1050-2947

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Abstract:	A quantum model for singly resonant second-harmonic generation in a cavity with transverse degrees of freedom is analyzed. An instability threshold for pattern formation exists in this system. Below threshold, a strong modulation of the noise is demonstrated in the transverse structure of the far field. The performed analysis encompasses both one- and two-point correlation functions. The noise in a single far-field point is generally above the classical vacuum noise level. In contrast, strong nonclassical two-point correlations are encountered between opposite emission directions in the far field. For the fundamental field the correlations are shown to be of the Einstein-Podolsky-Rosen type, thus establishing a remarkable analog to the quantum correlations found in a nondegenerate optical parametric oscillator.
Item Type:	Article
Copyright:	© 2003 The American Physical Society
Research Group:	Complex Photonic Systems (CoPS)
Link to this item:	http://purl.utwente.nl/publications/40626
Official URL:	http://dx.doi.org/10.1103/PhysRevA.68.023806
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