Observation of a long-lived prethermal discrete time crystal created by two-frequency driving

William Beatrez,1, ∗ Christoph Fleckenstein,2, ∗ Arjun Pillai,1 Erica Sanchez,1 Amala Akkiraju,1 Jesus Alcala,1 Sophie Conti,1 Paul Reshetikhin,1 Emanuel Druga,1 Marin Bukov,3, 4, † and Ashok Ajoy1, 5, ‡ 1Department of Chemistry, University of California, Berkeley, Berkeley, CA 94720, USA. 2Department of Physics, KTH Royal Institute of Technology, SE-106 91 Stockholm, Sweden. 3Department of Physics, St. Kliment Ohridski University of Sofia, 5 James Bourchier Blvd, 1164 Sofia, Bulgaria. 4Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Str. 38, 01187 Dresden, Germany. 5Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.