Supplemental Material to Multielectron Ground State Electroluminescence

Mauro Cirio, 2, ∗ Nathan Shammah‡,2, ∗ Neill Lambert, Simone De Liberato, and Franco Nori 4 Graduate School of China Academy of Engineering Physics, Beijing 100193, China Theoretical Quantum Physics Laboratory, RIKEN Cluster for Pioneering Research, Wako-shi, Saitama 351-0198, Japan School of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ, United Kingdom Department of Physics, University of Michigan, Ann Arbor, MI 48109-1040, USA (Dated: April 29, 2019)