A strontium optical lattice clock apparatus for precise frequency metrology and beyond

Year: 2017

Authors: Tarallo M.G., Calonico D., Levi F., Barbiero M., Lamporesi G., Ferrari G.

Autors Affiliation: -Istituto Nazionale di Ricerca Metrologica Strada delle Cacce 91, Torino 10135, Italy
-CNR–INO Trento Via Sommarive 13, 38123 Trento, Italy

Abstract: We present the advancement toward the realization of a new optical clock apparatus based on ultracold strontium atoms. The atomic source employs a novel design based on two dimensional magneto optical trapping which is advantageous because of the suppression of thermal atoms in the interrogation volume, and the elimination of hot BBR in the view of the science cell. Compact frequency stabilization of cooling and trapping lasers is achieved via single PDH lock to a three-color ultrastable optical resonator. We also study different lattice topologies to operate the ultracold atomic ensemble in the high-cooperativity regime toward sub-quantum projection noise instability and millihertz-linewidth frequency stabilization by cavity QED.

Conference title: 2017 Joint Conference of the European, 9-13 July 2017. In: Frequency and Time Forum and IEEE International Frequency Control Symposium (EFTF/IFCS).
DOI 10.1109/FCS.2017.8089020

KeyWords: optical clock; strontium;