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Generation of entangled states in polydomain potassium-dihydrophosphate crystals |
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| Authors: | D. A. Kalashnikov V. P. Karasev S. P. Kulik A. A. Solov’ev G. O. Rytikov |
| Affiliation: | (1) Zavoiskii Physicotechnical Institute, Kazan Scientific Center, Russian Academy of Sciences, Sibirskii trakt 10/7, Kazan 29, 420029, Russia;(2) Lebedev Physical Institute, Russian Academy of Sciences, Leninskii pr. 53, Moscow, 119992, Russia;(3) Faculty of Physics, Moscow State University, Moscow, 119992, Russia;(4) Moscow State University of Press, Moscow, 127550, Russia |
| Abstract: | It is shown experimentally that polarized entangled two-photon states in a pair of frequency modes can appear in the process of the spontaneous parametric down conversion in ferroelectric crystals with a quasi-regular domain structure (such as potassium dihydrophosphate). Entanglement measures and polarization characteristics of these states are determined. |
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