The start of a scientific seminar

19 of November in the Conference hall of our center at 14:30 Laboratory of quantum memory started their weekly seminar sessions. The first presentation was devoted to the Er3+:Y2SiO5 famous for its homogeneous absorption linewidth of only 73 Hz, which is thinner than in any other known solid state material. The presentation “An overview of properties of Er3+:Y2SiO5 for photon echo” by Ravil Urmancheev touched on the properties of 4I15/2 -> 4I13/2 transition in Er.