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Title: | Spatial quantum correlations in the fluorescence of traveling-wave second-harmonic generation |
Authors: | Scotto, Pierre | Keywords: | [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 |
Issue Date: | 29-Sep-2003 | Publisher: | American Physical Society | Citation: | Physical Review A 68(3): 033814 (2003) | Abstract: | 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. | Description: | 15 pages, 14 figures.-- PACS nrs.: 42.50.Lc, 42.50.Dv, 42.65.Ky. | Publisher version (URL): | http://dx.doi.org/10.1103/PhysRevA.68.033814 | URI: | http://hdl.handle.net/10261/15341 | DOI: | 10.1103/PhysRevA.68.033814 | ISSN: | 1050-2947 |
Appears in Collections: | (IFISC) Artículos |
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ScottoPRA33814.pdf | 195,08 kB | Adobe PDF | ![]() View/Open |
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