| Issue |
EPJ Web Conf.
Volume 161, 2017
XI International Symposium on Photon Echo and Coherent Spectroscopy (PECS-2017)
|
|
|---|---|---|
| Article Number | 02002 | |
| Number of page(s) | 2 | |
| Section | Oral talks | |
| DOI | https://doi.org/10.1051/epjconf/201716102002 | |
| Published online | 31 October 2017 | |
https://doi.org/10.1051/epjconf/201716102002
Towards spontaneous parametric down-conversion at low temperatures
1
Kazan E. K. Zavoisky Physical-Technical Institute, 10/7 Sibirsky trakt Str., Kazan, 420029 Russia
2
Institute of Spectroscopy RAS Moscow, 5 Fizicheskaya Str., Troitsk, Moscow 108840 Russia
3
Lomonosov Moscow State University, GSP-1 Leninskie Gory, Moscow, 119991 Russia
* Corresponding author: akatevdmitrijj@gmail.com
Published online: 31 October 2017
The possibility of observing spontaneous parametric down-conversion in doped nonlinear crystals at low temperatures, which would be useful for combining heralded single-photon sources and quantum memories, is studied theoretically. The ordinary refractive index of a lithium niobate crystal doped with magnesium oxide LiNbO3:MgO is measured at liquid nitrogen and helium temperatures. On the basis of the experimental data, the coefficients of the Sellmeier equation are determined for the temperatures from 5 to 300 K. In addition, a poling period of the nonlinear crystal has been calculated for observing type-0 spontaneous parametric down-conversion (ooo-synchronism) at the liquid helium temperature under pumping at the wavelength of λp = 532 nm and emission of the signal field at the wavelength of λs = 794 nm, which corresponds to the resonant absorption line of Tm3+ doped ions.
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
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