B.
Sundar
Green, A. M., Elben, A. ., Alderete, C. H., Joshi, L. K., Nguyen, N. H., Zache, T. V., … Linke, N. M. (2022). Experimental Measurement of Out-of-Time-Ordered Correlators at Finite Temperature. Physical Review Letters, 128. http://doi.org/10.1103/PhysRevLett.128.140601 (Original work published April 2022)