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Título : Spatial quantum correlations in the fluorescence of traveling-wave second-harmonic generation
Autor : Scotto, Pierre
Palabras clave : [PACS] Quantum fluctuations, quantum noise, and quantum jumps
[PACS] Nonclassical states of the electromagnetic field, including entangled photon states; quantum state engineering and measurements
[PACS] Frequency conversion; harmonic generation, including higher-order harmonic generation
Fecha de publicación : 29-Sep-2003
Editor: American Physical Society
Citación : Physical Review A 68(3): 033814 (2003)
Resumen: We investigate theoretically the spatial quantum correlations of the light produced by spontaneous emission in type-I second-harmonic generation in the traveling-wave configuration. It is first shown that spontaneous emission occurs at both fundamental and second-harmonic frequency. Considering the quantum fluctuations of the intensities collected in symmetrical parts of the far-field plane, nonclassical correlations below the shot noise are predicted not only at fundamental frequency, but also at second-harmonic frequency. The latter cannot be traced back to any twin-photon emission mechanism, but are generated by a secondary process acting on twin photons. This mechanism also creates correlations between fundamental and second-harmonic field, at a given transverse wave number, and at opposite wave numbers. The analysis of a simplified few-mode model, on a quantum level, provides a good qualitative understanding of these correlations.
Descripción : 15 pages, 14 figures.-- PACS nrs.: 42.50.Lc, 42.50.Dv, 42.65.Ky.
Versión del editor: http://dx.doi.org/10.1103/PhysRevA.68.033814
URI : http://hdl.handle.net/10261/15341
ISSN: 1050-2947
DOI: 10.1103/PhysRevA.68.033814
Citación : Physical Review A 68(3): 033814 (2003)
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