Emerging Military Technologies: Background and Issues for Congress [Updated April 6, 2022] [open pdf - 2MB]
From the Summary: "Members of Congress and Pentagon officials are increasingly focused on developing emerging military technologies to enhance U.S. national security and keep pace with U.S. competitors. The U.S. military has long relied upon technological superiority to ensure its dominance in conflict and to underwrite U.S. national security. In recent years, however, technology has both rapidly evolved and rapidly proliferated--largely as a result of advances in the commercial sector. [...] This report provides an overview of selected emerging military technologies in the United States, China, and Russia:  artificial intelligence,  lethal autonomous weapons,  hypersonic weapons,  directed energy weapons,  biotechnology, and  quantum technology."
CRS Report for Congress, R46458
Congressional Research Service: https://crsreports.congress.gov/