Spatial distribution of quantum fluctuations in spontaneous down-conversion in realistic situations: Comparison between the stochastic approach and the Green's function method

European Physical Journal D

Volumn 29, Issue 3, 2004, Pages 437-444

  Lantz, E ^a   Treps, N ^b   Fabre, C ^b   Brambilla, E ^c  

^a FEMTO ST INSTITUTE   (France)

^b CNRS   (France)

^c UNIVERSITY OF INSUBRIA   (Italy)

Author keywords

[No Author keywords available]

Indexed keywords

PIXELS; QUANTUM ELECTRONICS; SHOT NOISE; STOCHASTIC MODELS; STOCHASTIC SYSTEMS;

DOWNCONVERSION; GREENS' FUNCTION METHOD; PUMP BEAMS; PUMP DEPLETION; QUANTUM EFFECTS; QUANTUM FLUCTUATION; SPONTANEOUS PARAMETRIC DOWN-CONVERSION; STOCHASTIC APPROACH; STOCHASTIC SIMULATIONS; WIGNER DISTRIBUTION;

SPATIAL DISTRIBUTION;

EID: 2942625804     PISSN: 14346060     EISSN: None     Source Type: Journal    
DOI: 10.1140/epjd/e2004-00040-4     Document Type: Article

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21. r→,-r→ for intensities greater than 300 photons per pixel. This evolution confirms that quantum effects are more visible when thermal-like fluctuations are not too intense. It is not clear if the complete disappearance of quantum effects for high gains is physical or due to numerical accuracy problems. On the experimental side however, it is quite clear that the sub-shot noise level on the differences cannot be attained when the shot-noise fluctuations are very small compared to the thermal fluctuations