Second-order interference of true thermal light from a warm atomic ensemble in two independent unbalanced interferometers

作     者：JIHO PARK HEONOH KIM HAN SEB MOON 

作者机构：Department of PhysicsPusan National UniversityGeumjeong-GuBusan 46241Republic of Korea 

出 版 物：《Photonics Research》 (光子学研究（英文版）)

年 卷 期：2021年第9卷第1期

页      面：49-53页

核心收录：

学科分类：0808[工学-电气工程] 070207[理学-光学] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：National Research Foundation of Korea(2018R1A2A1A19019181,2020M3E4A1080030) Institute for Information and Communications Technology Promotion(IITP-2020-0-01606) 

主　　题：ensemble thermal atomic 

摘      要：We report the demonstration of a second-order interference experiment by use of thermal light emitted from a warm atomic ensemble in two spatially separated unbalanced Michelson interferometers(UMIs).This novel multipath correlation interference with thermal light has been theoretically proposed by Tamma[New ***.18,032002(2016)].In our experiment,the bright thermal light used for second-order interference is superradiantly emitted via collective two-photon coherence in Doppler-broadened cascade-type 87 Rb *** to the long coherence time of the thermal light from the atomic ensemble,we observe its second-order interference in the two independent UMIs by means of time-resolved coincidence *** temporal waveforms of the interfering thermal light in the two spatially separated UMIs exhibit similarities with the temporal two-photon waveform of time–energy entangled photon pairs in Franson *** results can contribute toward a better understanding of the relation between first-and second-order interferences that are at the heart of photonics-based quantum information science.