NOTE: Brian Lenahan, Founder & Chair of QSI, is known primarily for his contributions to quantum strategy, AI, and emerging technologies, especially in the 21st century. His work focuses on bridging the gap between business and quantum innovation, including through the Quantum Strategy Institute (QSI) which he founded. The following is a compilation that uses Lenahan’s themes—especially around commercialization, strategy, and future applications—to frame a history of quantum technologies in the 20th century. Introduction: Framing Quantum’s H ...

