Quantum spectroscopy by frequency-correlated photon pairs
Učënye zapiski Kazanskogo universiteta. Seriâ Fiziko-matematičeskie nauki, Kazanskii Gosudarstvennyi Universitet. Uchenye Zapiski. Seriya Fiziko-Matematichaskie Nauki, Tome 149 (2007) no. 1, pp. 58-63

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The new approach is experimentally realized for spectroscopic investigation of matter, where frequency-correlated photon pairs generated in the process of spontaneous parametric down-conversion (SPDC) are used. The doped crystal of YAG:Er$^{3+}$ under investigation was placed one of the channels of Brown–Twiss interferometer scheme, while the wavelength control was made by a monochromator in another channel. The criteria of fidelity is a comparison with absorption spectra measured with the help of classical light source.
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     title = {Quantum spectroscopy by frequency-correlated photon pairs},
     journal = {U\v{c}\"enye zapiski Kazanskogo universiteta. Seri\^a Fiziko-matemati\v{c}eskie nauki},
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     url = {http://geodesic.mathdoc.fr/item/UZKU_2007_149_1_a8/}
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A. A. Kalachev; D. A. Kalashnikov; A. A. Kalinkin; V. V. Samartsev; A. V. Shkalikov. Quantum spectroscopy by frequency-correlated photon pairs. Učënye zapiski Kazanskogo universiteta. Seriâ Fiziko-matematičeskie nauki, Kazanskii Gosudarstvennyi Universitet. Uchenye Zapiski. Seriya Fiziko-Matematichaskie Nauki, Tome 149 (2007) no. 1, pp. 58-63. http://geodesic.mathdoc.fr/item/UZKU_2007_149_1_a8/