%0 Journal Article
%A Kukharchyk, Nadezhda
%A Sholokhov, Dmitriy
%A Morozov, Oleg
%A Korableva, Stella L.
%A Kalachev, Alexey A.
%A Bushev, Pavel
%T Electromagnetically induced transparency in a mono-isotopic 167 Er: 7 LiYF 4 crystal below 1 Kelvin: microwave photonics approach
%J Optics express
%V 28
%N 20
%@ 1094-4087
%C Washington, DC
%I Soc.
%M FZJ-2020-05093
%P 29166 -
%D 2020
%X Electromagnetically induced transparency allows for the controllable change of absorption properties, which can be exploited in a number of applications including optical quantum memory. In this paper, we present a study of the electromagnetically induced transparency in a 167Er:7LiYF4 crystal at low magnetic fields and ultra-low temperatures. The experimental measurement scheme employs an optical vector network analysis that provides high precision measurement of amplitude, phase and group delay and paves the way towards full on-chip integration of optical quantum memory setups. We found that sub-Kelvin temperatures are the necessary requirement for observing electromagnetically induced transparency in this crystal at low fields. A good agreement between theory and experiment is achieved by taking into account the phonon bottleneck effect.
%F PUB:(DE-HGF)16
%9 Journal Article
%$ 33114821
%U <Go to ISI:>//WOS:000581074800037
%R 10.1364/OE.400222
%U https://juser.fz-juelich.de/record/888650