Intensity-intensity correlations as a probe of interferences - under conditions of none in the intensity

Details Intensity-intensity correlations as a probe of interferences - under conditions of none in the intensity Intensity-intensity correlations as a probe of interferences - under conditions of none in the intensity

2001-11-23

arxiv.org/abs/quant-ph/0111126v1

Phys. Rev. A 65, 053826 (2002)

Physics

Quantum Physics

14 pages, 2 figures

Scientific paper

10.1103/PhysRevA.65.053826

The different behaviour of first order interferences and second order correlations are investigated for the case of two coherently excited atoms. For intensity measurements this problem is equivalent to Young's double slit experiment and was investigated in an experiment by Eichmann et al. [Phys. Rev. Lett. 70, 2359 (1993)] and later analyzed in detail by Itano et al. [Phys. Rev. A 57, 4176 (1998)]. Our results show that in cases where the intensity interferences disappear the intensity-intensity correlations can display an interference pattern with a visibility of up to 100%. The contrast depends on the polarization selected for the detection and is independent of the strength of the driving field. The nonclassical nature of the calculated intensity-intensity correlations is also discussed.

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