supported by the National Natural Science Foundation of China(21835003,91833304,21422402,21604043,21674050,and 62004106);the National Key Basic Research Program of China(973 Program,2014CB648300 and 2017YFB0404501);the Natural Science Foundation of Jiangsu Province(BK20160888 and BE2019120);the Program for Jiangsu Specially-Appointed Professor(RK030STP15001);the Six Talent Peaks Project of Jiangsu Province(TD-XCL-009);the 333 Project of Jiangsu Province(BRA2017402);the Natural Science Foundation of the Jiangsu Higher Education Institutions of China(20KJB140005);China Postdoctoral Science Foundation(2020M671553);the NUPT“1311 Project”;Scientific Foundation(NY217169,NY215062,NY215107,and NY217087);the Leading Talent of Technological Innovation of National Ten-Thousands Talents Program of China,the Excellent Scientific and Technological Innovative Teams of Jiangsu Higher Education Institutions(TJ217038);the Postgraduate Research&Practice Innovation Program of Jiangsu Province(SJCX21-0297);the Synergetic Innovation Center for Organic Electronics and Information Displays,and the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)。
supported by the National Natural Science Foundation of China (10874009 and 11074011)
Active optical clock,a new conception of atomic clock,has been proposed recently.In this work,we propose a scheme of active optical clock based on four-level quantum system.The final accuracy and stability of two-leve...