TY - RPRT TI - Observation and origin of multi-THz quantum beats in superfluorescent emission from argon AU - Nambu, Noa [University of California, Los Angeles, CA (United States)] (ORCID:0000000197303400) AU - Nie, Zan [University of California, Los Angeles, CA (United States); Huazhong University of Science and Technology, Wuhan (China)] (ORCID:0000000292221462) AU - Marsh, Ken [University of California, Los Angeles, CA (United States)] (ORCID:0000000229293682) AU - Patel, C. Kumar N. [University of California, Los Angeles, CA (United States); QCL Systems, Los Angeles, CA (United States)] (ORCID:0000000178356670) AU - Smirnova, Olga [Max Born Institute, Berlin (Germany)] (ORCID:0000000277465733) AU - Ivanov, Misha [Max Born Institute, Berlin (Germany)] (ORCID:0000000288172469) AU - Joshi, Chan [University of California, Los Angeles, CA (United States)] (ORCID:000000031531307X) PY - 2025 DO - 10.1103/physreva.111.013116 UR - https://www.osti.gov/biblio/2506759 ID - 2506759 ER -